{"title":"Unihedron","description":"\u003ch3 data-start=\"128\" data-end=\"167\"\u003e\u003cem\u003e\u003cstrong data-start=\"132\" data-end=\"167\"\u003eUnihedron Astronomy Instruments\u003c\/strong\u003e\u003c\/em\u003e\u003c\/h3\u003e\n\u003cp data-start=\"169\" data-end=\"486\"\u003e\u003cstrong data-start=\"169\" data-end=\"210\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eUnihedron\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e is a \u003cstrong data-start=\"216\" data-end=\"236\"\u003eCanadian company\u003c\/strong\u003e best known for its precision \u003cstrong data-start=\"266\" data-end=\"294\"\u003eSky Quality Meters (SQM)\u003c\/strong\u003e and night-sky monitoring instruments. Trusted by astronomers, researchers, and observatories worldwide, Unihedron products provide accurate measurements of sky brightness and light pollution.\u003c\/p\u003e","products":[{"product_id":"unihedron-sky-quality-meter-sqm-lu","title":"Unihedron Sky Quality Meter (SQM-Classic)","description":"\u003ch2\u003eUnihedron Sky Quality Meter\u003c\/h2\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eAn affordable meter for measuring sky brightness for astronomers!\u003c\/p\u003e\n\u003cp\u003eThe \"Sky Quality Meter\" measures the brightness of the night sky in magnitudes per square arcsecond.\u003c\/p\u003e\n\u003cp\u003eUnprecedented sensitivity in a handheld meter!\u003c\/p\u003e\n\u003cp\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan\u003eUses:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e\n\u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e\n\u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e\n\u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e\n\u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e\n\u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e\n\u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e\n\u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e\n\u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/cleardarksky.com\/csk\/\" data-mce-href=\"http:\/\/cleardarksky.com\/csk\/\"\u003eClear Sky Clock\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"Charge-Coupled Device (type of image sensor)\"\u003e\u003cstrong\u003eCCD\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eusers can make a correlation between the SQM reading and when the background reaches some\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Analog-to-Digital Converter\"\u003e\u003cstrong\u003eADC\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003elevel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eFeatures:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAudible signal while measurement is in progress.\u003c\/li\u003e\n\u003cli\u003eSky brightness displayed in visual magnitudes per square arcsecond.\u003c\/li\u003e\n\u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e\n\u003cli\u003eTemperature in both Celsius and Fahrenheit as well as model number and serial number can be displayed with different button press sequence.\u003c\/li\u003e\n\u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e\n\u003cli\u003ePower-saving features designed in for maximum battery life.\u003c\/li\u003e\n\u003cli\u003eReverse battery protection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThe Half Width Half Maximum (HWHM) of the angular sensitivity is ~42°.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/images\/fovcurves.jpg\" data-mce-href=\"http:\/\/unihedron.com\/projects\/darksky\/images\/fovcurves.jpg\"\u003eComparison chart\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eOperates from 9V battery (included with courier shipments).\u003c\/li\u003e\n\u003cli\u003eSize 3.8 x 2.4 x 1 in.\u003c\/li\u003e\n\u003cli\u003eMaximum light sampling time: 80 seconds.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnihedron Sky Quality Meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty: Unihedron warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Default Title","offer_id":46096215212261,"sku":"UH-SQM-Classic","price":186.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/sqmback.jpg?v=1777043442"},{"product_id":"unihedron-sky-quality-meter-lu-sqm-lu","title":"Unihedron Sky Quality Meter - LU (SQM-LU)","description":"\u003ch2\u003eUnihedron Sky Quality Meter - LU\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" with=\"100%\"\u003e\n\u003cp\u003e\u003cb\u003eA USB SQM model for night-time sky brightness monitoring!\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn affordable meter for continual, connected measuring of sky brightness for astronomers!\u003c\/p\u003e\n\u003cp\u003eThe \"Sky Quality Meter - LU\" measures the brightness of the night sky in magnitudes per square arcsecond.\u003c\/p\u003e\n\u003cp\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003eUses:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e\n\u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e\n\u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e\n\u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e\n\u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e\n\u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e\n\u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e\n\u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e\n\u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/cleardarksky.com\/csk\/\"\u003eClear Sky Clock\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"Charge-Coupled Device (type of image sensor)\"\u003e\u003cstrong\u003eCCD\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eusers can make a correlation between the SQM reading and when the background reaches some\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Analog-to-Digital Converter\"\u003e\u003cstrong\u003eADC\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003elevel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSky brightness reported in visual magnitudes per square arcsecond.\u003c\/li\u003e\n\u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e\n\u003cli\u003eSensor temperature, model number, and serial number are provided.\u003c\/li\u003e\n\u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e\n\u003cli\u003eField-upgradeable firmware.\u003c\/li\u003e\n\u003cli\u003eOpen protocol\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LU\/SQM-LU_Users_manual.pdf\"\u003edocument\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWeatherproof Housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis housing design is made to protect the SQM-LE\/LU from normal outdoor conditions including weather and insects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhite surfaces reflect the hot summer sunshine.\u003c\/li\u003e\n\u003cli\u003eOpening on bottom to allow moisture to escape.\u003c\/li\u003e\n\u003cli\u003eGlass top to prevent scratching when removing ice.\u003c\/li\u003e\n\u003cli\u003eRaised glass surface to prevent dirt and leaves from collecting.\u003c\/li\u003e\n\u003cli\u003eSmall glass opening to minimize internal heating due to the Sun.\u003c\/li\u003e\n\u003cli\u003eCable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.\u003c\/li\u003e\n\u003cli\u003eMarine silicone seal rated for outdoor use.\u003c\/li\u003e\n\u003cli\u003eSilicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.\u003c\/li\u003e\n\u003cli\u003eHose clamps for easy mounting to pole.\u003c\/li\u003e\n\u003cli\u003eStaples for easy mounting to wood surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDetails:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing-all.pdf\"\u003eDiagram of all SQM meters that fit into housing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/photos\"\u003ePhotos\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing_glass_versions.pdf\"\u003eGlass versions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/wiring\"\u003eSQM-LE wiring layout inside housing.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWhat you get:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHousing with removable top cap. 8.8 x 18.7cm, 360g.\u003c\/li\u003e\n\u003cli\u003eTwo adjustable clamps.\u003c\/li\u003e\n\u003cli\u003eTwo staples for mounting to wood.\u003c\/li\u003e\n\u003cli\u003eInstruction sheet.\u003c\/li\u003e\n\u003cli\u003eAn optional PoE (\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-le\/PDFspecs\/PoE\"\u003eLinksys WAPPOE-5V or D-Link DWL-P200 or TL-POE200\u003c\/a\u003e) for extended length SQM-LE installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUSB connectivity\u003c\/li\u003e\n\u003cli\u003eIncluded applications for reading data in Perl.\u003c\/li\u003e\n\u003cli\u003eThe Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-l\/fovannotated.jpg\"\u003eAnnotated FOV spec\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/images\/fovcurves.jpg\"\u003eComparison chart\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.\u003c\/li\u003e\n\u003cli\u003eSize 3.6 x 2.6 x 1.1 in.\u003c\/li\u003e\n\u003cli\u003eMaximum light sampling time: 80 seconds.\u003c\/li\u003e\n\u003cli\u003eMinimum light sampling time: 1 seconds.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnihedron Sky Quality Meter - LU\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eMeter only\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\" style=\"width: 100.073%;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" style=\"width: 0.734214%;\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu\/whatyouget.jpg\"\u003e\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-lu\/whatyougeticon.jpg\" border=\"0\" title=\"What you get\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" style=\"width: 99.1189%;\"\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LU unit\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\"\u003eonline\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e15ft USB cable\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit USB serial number, and calibration values\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003e\n\u003cb\u003eMeter and weatherproof housing\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu\/whatyougeth.jpg\"\u003e\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-lu\/whatyougethicon.jpg\" border=\"0\" title=\"What you get\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LU unit\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\"\u003eonline\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e15ft USB cable\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit USB serial number, and calibration values\u003c\/li\u003e\n\u003cli\u003eWeatherproof housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty: Unihedron Warranty\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Unihedron Sky Quality Meter - LU","offer_id":46118652281061,"sku":"UH-SQM-LU","price":294.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Sky Quality Meter - LU+H","offer_id":46118652313829,"sku":"UH-SQM-LUH","price":356.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/sqmlu_closeup.jpg?v=1777043444"},{"product_id":"unihedron-sky-quality-meter-lu-dl-sqm-lu-dl","title":"Unihedron Sky Quality Meter - LU-DL (SQM-LU-DL)","description":"\u003ch3\u003eUnihedron Sky Quality Meter - LU-DL\u003c\/h3\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/sqmludl_closeup.jpg\"\u003e\u003cimg title=\"Click for close-up\" alt=\"Sky Quality Meter-LU-DL\" align=\"left\" border=\"0\" src=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/sqmludl_icon.jpg\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\" with=\"100%\"\u003e\n\u003cp\u003e\u003cb\u003eA USB enabled data-logging light meter for night-time sky brightness monitoring!\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn affordable meter for continual, connected or autonomous data-logging to measure sky brightness for astronomers and light pollution investigators.\u003c\/p\u003e\n\u003cp\u003eThe \"Sky Quality Meter - LU-DL\" (SQM-LU-DL) measures the brightness of the night sky in magnitudes per square arcsecond.\u003c\/p\u003e\n\u003cp\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003chr\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cb\u003eUses:\u003c\/b\u003e\n\u003cul\u003e\n\u003cli\u003eMeasuring the night sky brightness during remote biological field experiments.\u003c\/li\u003e\n\u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e\n\u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e\n\u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e\n\u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e\n\u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e\n\u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e\n\u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e\n\u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e\n\u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/www.cleardarksky.com\/csk\/\"\u003eClear Sky Clock\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"Charge-Coupled Device (type of image sensor)\"\u003e\u003cstrong\u003eCCD\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eusers can make a correlation between the SQM reading and when the background reaches some\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Analog-to-Digital Converter\"\u003e\u003cstrong\u003eADC\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003elevel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003e\n\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/DLcontrols.jpg\"\u003e\u003cimg title=\"Click for close-up\" src=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/DLcontrols_icon.jpg\"\u003e\u003c\/a\u003e\u003cspan\u003e\u003cbr\u003eSQM-LU-DL control panel\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSky brightness reported in visual magnitudes per square arcsecond.\u003c\/li\u003e\n\u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e\n\u003cli\u003eSensor temperature, model number, and serial number are provided.\u003c\/li\u003e\n\u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e\n\u003cli\u003eField-upgradeable firmware.\u003c\/li\u003e\n\u003cli\u003eAll the features of our SQM-LU (USB model) plus Data logging capabilities.\u003c\/li\u003e\n\u003cli\u003eOpen protocol\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LU-DL\/SQM-LU-DL_Users_manual.pdf\"\u003edocument\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\n\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUSB connectivity\u003c\/li\u003e\n\u003cli\u003eIncluded applications for reading data in Perl.\u003c\/li\u003e\n\u003cli\u003eThe Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-l\/fovannotated.jpg\"\u003eAnnotated FOV spec\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/images\/fovcurves.jpg\"\u003eComparison chart\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.\u003c\/li\u003e\n\u003cli\u003eSize 5.5 x 2.6 x 1.1 in.\u003c\/li\u003e\n\u003cli\u003eMaximum light sampling time: 80 seconds.\u003c\/li\u003e\n\u003cli\u003eMinimum light sampling time: 1 seconds.\u003c\/li\u003e\n\u003cli\u003ePowered by external battery pack (included) for field data logging, or USB data cable for computer powered data logging using UDM, or 5V USB \"phone\" charger for mains powered data logging (see charger requirements\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/CurrentRequirements.pdf\"\u003ehere\u003c\/a\u003e).\u003c\/li\u003e\n\u003cli\u003eRecording memory capacity: 1048576 records total.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWeatherproof Housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis housing design is made to protect the SQM-LE\/LU from normal outdoor conditions including weather and insects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhite surfaces reflect the hot summer sunshine.\u003c\/li\u003e\n\u003cli\u003eOpening on bottom to allow moisture to escape.\u003c\/li\u003e\n\u003cli\u003eGlass top to prevent scratching when removing ice.\u003c\/li\u003e\n\u003cli\u003eRaised glass surface to prevent dirt and leaves from collecting.\u003c\/li\u003e\n\u003cli\u003eSmall glass opening to minimize internal heating due to the Sun.\u003c\/li\u003e\n\u003cli\u003eCable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.\u003c\/li\u003e\n\u003cli\u003eMarine silicone seal rated for outdoor use.\u003c\/li\u003e\n\u003cli\u003eSilicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.\u003c\/li\u003e\n\u003cli\u003eHose clamps for easy mounting to pole.\u003c\/li\u003e\n\u003cli\u003eStaples for easy mounting to wood surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDetails:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing-all.pdf\"\u003eDiagram of all SQM meters that fit into housing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/photos\"\u003ePhotos\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing_glass_versions.pdf\"\u003eGlass versions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/wiring\"\u003eSQM-LE wiring layout inside housing.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWhat you get:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHousing with removable top cap. 8.8 x 18.7cm, 360g.\u003c\/li\u003e\n\u003cli\u003eTwo adjustable clamps.\u003c\/li\u003e\n\u003cli\u003eTwo staples for mounting to wood.\u003c\/li\u003e\n\u003cli\u003eInstruction sheet.\u003c\/li\u003e\n\u003cli\u003eAn optional PoE (\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-le\/PDFspecs\/PoE\"\u003eLinksys WAPPOE-5V or D-Link DWL-P200 or TL-POE200\u003c\/a\u003e) for extended length SQM-LE installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eWhat you get (meter only):\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LU-DL unit\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\"\u003eonline\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e15ft USB cable\u003c\/li\u003e\n\u003cli\u003eBattery-to-USB adapter with 6 AA cells and battery holder\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit USB serial number, and calibration values\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWhat you get (with housing):\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/whatyouget-whousing.jpg\"\u003e\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-lu-dl\/whatyouget-whousing-icon.jpg\" border=\"0\" title=\"What you get (with housing)\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LU-DL unit\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\"\u003eonline\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e15ft USB cable\u003c\/li\u003e\n\u003cli\u003eBattery-to-USB adapter with 6 AA cells and battery holder\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit USB serial number, and calibration values\u003c\/li\u003e\n\u003cli\u003eWeatherproof housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty: Unihedron Warranty\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Unihedron Sky Quality Meter - LU-DL (SQM-LU-DL)","offer_id":46118689800421,"sku":"UH-SQM-LU-DL","price":387.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Sky Quality Meter - LU-DL+H (SQM-LU-DLH)","offer_id":46118689833189,"sku":"UH-SQM-LU-DLH","price":450.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/sdfdsfdsfds.png?v=1777045106"},{"product_id":"unihedron-sky-quality-meter-le-sqm-le","title":"Unihedron Sky Quality Meter - LE","description":"\u003ch2\u003eUnihedron Sky Quality Meter - LE\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003e\u003cb\u003eAn ethernet-enabled SQM model for night-time sky brightness monitoring!\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn affordable meter for continual, connected measuring of sky brightness for astronomers!\u003c\/p\u003e\n\u003cp\u003eThe \"Sky Quality Meter - LE\" measures the brightness of the night sky in magnitudes per square arcsecond.\u003c\/p\u003e\n\u003cp\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd width=\"10%\"\u003e\n\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-le\/sqmleg.gif\" border=\"0\" align=\"left\" alt=\"Live SQM-LE results from Unihedron office\" title=\"This code (sqmlog.pl and sqmplot.pl) is available on the FLASH-drive, see below for link.\"\u003e\u003cbr clear=\"all\"\u003e\n\u003cdiv align=\"center\"\u003eLive SQM-LE results from the Unihedron office\u003c\/div\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003eUses:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e\n\u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e\n\u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e\n\u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e\n\u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e\n\u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e\n\u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e\n\u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e\n\u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/cleardarksky.com\/csk\/\"\u003eClear Sky Clock\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"Charge-Coupled Device (type of image sensor)\"\u003e\u003cstrong\u003eCCD\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eusers can make a correlation between the SQM reading and when the background reaches some\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Analog-to-Digital Converter\"\u003e\u003cstrong\u003eADC\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003elevel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSky brightness reported in visual magnitudes per square arcsecond.\u003c\/li\u003e\n\u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e\n\u003cli\u003eSensor temperature, model number, and serial number are provided.\u003c\/li\u003e\n\u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e\n\u003cli\u003eField-upgradeable\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-le\/updates\"\u003efirmware\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eOpen protocol\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LE\/SQM-LE_Users_manual.pdf\"\u003edocument\u003c\/a\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eWeatherproof Housing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis housing design is made to protect the SQM-LE\/LU from normal outdoor conditions including weather and insects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhite surfaces reflect the hot summer sunshine.\u003c\/li\u003e\n\u003cli\u003eOpening on bottom to allow moisture to escape.\u003c\/li\u003e\n\u003cli\u003eGlass top to prevent scratching when removing ice.\u003c\/li\u003e\n\u003cli\u003eRaised glass surface to prevent dirt and leaves from collecting.\u003c\/li\u003e\n\u003cli\u003eSmall glass opening to minimize internal heating due to the Sun.\u003c\/li\u003e\n\u003cli\u003eCable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.\u003c\/li\u003e\n\u003cli\u003eMarine silicone seal rated for outdoor use.\u003c\/li\u003e\n\u003cli\u003eSilicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.\u003c\/li\u003e\n\u003cli\u003eHose clamps for easy mounting to pole.\u003c\/li\u003e\n\u003cli\u003eStaples for easy mounting to wood surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eDetails:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing-all.pdf\"\u003eDiagram of all SQM meters that fit into housing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/photos\"\u003ePhotos\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing_glass_versions.pdf\"\u003eGlass versions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/wiring\"\u003eSQM-LE wiring layout inside housing.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eWhat you get:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eHousing with removable top cap. 8.8 x 18.7cm, 360g.\u003c\/li\u003e\n\u003cli\u003eTwo adjustable clamps.\u003c\/li\u003e\n\u003cli\u003eTwo staples for mounting to wood.\u003c\/li\u003e\n\u003cli\u003eInstruction sheet.\u003c\/li\u003e\n\u003cli\u003eAn optional PoE (\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-le\/PDFspecs\/PoE\"\u003eLinksys WAPPOE-5V or D-Link DWL-P200 or TL-POE200\u003c\/a\u003e) for extended length SQM-LE installations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEthernet connectivity\u003c\/li\u003e\n\u003cli\u003eIncluded applications for reading data in Java, C, Perl, Python.\u003c\/li\u003e\n\u003cli\u003eThe Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively. Annotated FOV spec.\u003cbr\u003eComparison chart.\u003c\/li\u003e\n\u003cli\u003eOperates from 5-6VDC adapter (included).\u003c\/li\u003e\n\u003cli\u003eSize 3.6 x 2.6 x 1.1 in.\u003c\/li\u003e\n\u003cli\u003eMaximum light sampling time: 80 seconds.\u003c\/li\u003e\n\u003cli\u003eMinimum light sampling time: 1 seconds.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003ch4\u003eMeter only:\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LE unit\u003c\/li\u003e\n\u003cli\u003eInternational Power adapter\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online.\u003c\/li\u003e\n\u003cli\u003e6ft Ethernet cable (straight through for connection to hub\/router)\u003c\/li\u003e\n\u003cli\u003eEthernet crossover cable or adapter (for connection directly to PC)\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit MAC address, and calibration values\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat you get (with housing):\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LE unit\u003c\/li\u003e\n\u003cli\u003eInternational Power adapter\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online.\u003c\/li\u003e\n\u003cli\u003e6ft Ethernet cable (straight through for connection to hub\/router)\u003c\/li\u003e\n\u003cli\u003eEthernet crossover cable or adapter (for connection directly to PC)\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit MAC address, and calibration values\u003c\/li\u003e\n\u003cli\u003eWeatherproof housing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eWhat you get (with housing and PoE adapters): \u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LE unit\u003c\/li\u003e\n\u003cli\u003eInternational Power adapter\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found online.\u003c\/li\u003e\n\u003cli\u003e6ft Ethernet cable (straight through for connection to hub\/router)\u003c\/li\u003e\n\u003cli\u003eEthernet crossover cable or adapter (for connection directly to PC)\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit MAC address, and calibration values\u003c\/li\u003e\n\u003cli\u003eWeatherproof housing\u003c\/li\u003e\n\u003cli\u003ePower over Ethernet kit with North American plug (may look different than photo)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty: Unihedron Warranty\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Unihedron Sky Quality Meter-LE","offer_id":46118592086245,"sku":"UH-SQM-LE-2","price":402.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Sky Quality Meter-LE+H","offer_id":46118592119013,"sku":"UH-SQM-LEH","price":466.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Sky Quality Meter-LE+H+PoE","offer_id":46118679445733,"sku":"UH-SQM-LEHPOE","price":563.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/hbjfew.png?v=1777045108"},{"product_id":"unihedron-sky-quality-meter-lr-sqm-lr","title":"Unihedron Sky Quality Meter - LR (SQM-LR)","description":"\u003ch2\u003eUnihedron Sky Quality Meter - LR\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\" with=\"100%\"\u003e\n\u003cp\u003e\u003cb\u003eAn RS232 SQM model for night-time sky brightness monitoring!\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAn affordable meter for continual, connected measuring of sky brightness for astronomers!\u003c\/p\u003e\n\u003cp\u003eThe \"Sky Quality Meter - LR\" measures the brightness of the night sky in magnitudes per square arcsecond.\u003c\/p\u003e\n\u003cp\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cb\u003eUses:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eFind out how good the night or site REALLY is.\u003c\/li\u003e\n\u003cli\u003eCompare the sky brightness at different sites quantitatively.\u003c\/li\u003e\n\u003cli\u003eDocument the evolution of light pollution in your area.\u003c\/li\u003e\n\u003cli\u003eSet planetarium dome illumination to mimic the skies people are likely to experience elsewhere in the city.\u003c\/li\u003e\n\u003cli\u003eMonitor sky brightness through the night, night-to-night, and year-to-year.\u003c\/li\u003e\n\u003cli\u003eDetermine which nights show the greatest promise for finding the 'faintest fuzzies'!\u003c\/li\u003e\n\u003cli\u003eCalibrate the effect of sky brightness on qualitative measures such as the Bortle Scale.\u003c\/li\u003e\n\u003cli\u003eInvestigate how sky brightness correlates with the solar cycle and month-to-month sunspot activity.\u003c\/li\u003e\n\u003cli\u003eHelp provide local ground truth for future sky brightness prediction with the\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/cleardarksky.com\/csk\/\"\u003eClear Sky Clock\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca title=\"Charge-Coupled Device (type of image sensor)\"\u003e\u003cstrong\u003eCCD\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eusers can make a correlation between the SQM reading and when the background reaches some\u003cspan\u003e \u003c\/span\u003e\u003ca title=\"Analog-to-Digital Converter\"\u003e\u003cstrong\u003eADC\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003elevel.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eDeployment:\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eLegacy computer interface installations.\u003c\/li\u003e\n\u003cli\u003eMODEM interface installations.\u003c\/li\u003e\n\u003cli\u003eSimple electronic interface projects.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSky brightness reported in visual magnitudes per square arcsecond.\u003c\/li\u003e\n\u003cli\u003eInfrared blocking filter restricts measurement to visual bandpass.\u003c\/li\u003e\n\u003cli\u003eSensor temperature, model number, and serial number are provided.\u003c\/li\u003e\n\u003cli\u003ePrecision readings at even the darkest sites.\u003c\/li\u003e\n\u003cli\u003eField-upgradeable firmware.\u003c\/li\u003e\n\u003cli\u003eOpen protocol\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LR\/SQM-LR_Users_manual.pdf\"\u003edocument\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRS232 connectivity\u003c\/li\u003e\n\u003cli\u003eIncluded applications for reading data in Perl.\u003c\/li\u003e\n\u003cli\u003eThe Half Width Half Maximum (HWHM) of the angular sensitivity is ~10°. The Full Width Half Maximum (FWHM) is then ~20°. The sensitivity to a point source ~19° off-axis is a factor of 10 lower than on-axis. A point source ~20° and ~40° off-axis would register 3.0 and 5.0 magnitudes fainter, respectively.\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-l\/fovannotated.jpg\"\u003eAnnotated FOV spec\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/images\/fovcurves.jpg\"\u003eComparison chart\u003c\/a\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e.\u003c\/li\u003e\n\u003cli\u003eSize 3.6 x 2.6 x 1.1 in.\u003c\/li\u003e\n\u003cli\u003eMaximum light sampling time: 80 seconds.\u003c\/li\u003e\n\u003cli\u003eMinimum light sampling time: 1 seconds.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSQM-LR unit\u003c\/li\u003e\n\u003cli\u003eSQM-LR users manual\u003c\/li\u003e\n\u003cli\u003eUSB flash drive containing the users manual, operation software (UDM), and example software. This can also be found\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\"\u003eonline\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e6ft RS232 straight through cable\u003c\/li\u003e\n\u003cli\u003eInternational AC adapter\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit serial number, and calibration values\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarramty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty : Unihedron warranty\u003c\/p\u003e\n\u003cp\u003eManual: \u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/\"\u003eUnihedron\u003c\/a\u003e\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Default Title","offer_id":46118661619941,"sku":"UH-SQM-LR","price":294.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/LE_H_1812b329-a9d5-43e1-a01d-d1682523014c.png?v=1777045110"},{"product_id":"unihedron-sky-quality-meter-weatherproof-housing-sqm-wph","title":"Unihedron Sky Quality Meter  - Weatherproof Housing (SQM-WPH)","description":"\u003ch2\u003e\n\u003cspan style=\"text-decoration: underline;\"\u003e\u003c\/span\u003eUnihedron Sky Quality Meter - Weatherproof Housing\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThis housing design is made to protect the SQM-LE\/LU from normal outdoor conditions including weather and insects.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eWhite surfaces reflect the hot summer sunshine.\u003c\/li\u003e\n\u003cli\u003eOpening on bottom to allow moisture to escape.\u003c\/li\u003e\n\u003cli\u003eGlass top to prevent scratching when removing ice.\u003c\/li\u003e\n\u003cli\u003eRaised glass surface to prevent dirt and leaves from collecting.\u003c\/li\u003e\n\u003cli\u003eSmall glass opening to minimize internal heating due to the Sun.\u003c\/li\u003e\n\u003cli\u003eCable opening at bottom sealed with open-cell (breathable) foam prevents insects from entering.\u003c\/li\u003e\n\u003cli\u003eMarine silicone seal rated for outdoor use.\u003c\/li\u003e\n\u003cli\u003eSilicone seal around glass extends beyond glass-plastic interface to prevent ice from building in crevices.\u003c\/li\u003e\n\u003cli\u003eHose clamps for easy mounting to pole.\u003c\/li\u003e\n\u003cli\u003eStaples for easy mounting to wood surface.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\n\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing-all.pdf\"\u003eDiagram of all SQM meters that fit into housing (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/photos\"\u003ePhotos\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/housing_glass_versions.pdf\"\u003eGlass versions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqmhousing\/wiring\"\u003eSQM-LE wiring layout inside housing.\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\n\u003cb\u003eIn the Box\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eHousing with removable top cap. 8.8 x 18.7cm, 360g.\u003c\/li\u003e\n\u003cli\u003eTwo adjustable clamps.\u003c\/li\u003e\n\u003cli\u003eTwo staples for mounting to wood.\u003c\/li\u003e\n\u003cli\u003eInstruction sheet.\u003c\/li\u003e\n\u003cli\u003eAn optional PoE (\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-le\/PDFspecs\/PoE\"\u003eLinksys WAPPOE-5V or D-Link DWL-P200 or TL-POE200\u003c\/a\u003e) for extended length SQM-LE installations\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eor\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHousing, suitable for SQM-LE\/LU\/LR.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eor\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eHousing with PoE, suitable for SQM-LE only.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eor\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eSpare housing cap.\u003c\/span\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003eWarranty \u0026amp; Manual\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eWarranty: Unihedron warranty\u003c\/span\u003e\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Unihedron Housing suitable for SQM-LE\/LU\/LR","offer_id":46118742524133,"sku":"UH-SQM-WPH-LELULR","price":62.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Housing with PoE suitable for SQM-LE only","offer_id":46118742556901,"sku":"UH-SQM-WPH-LE","price":155.0,"currency_code":"CAD","in_stock":true},{"title":"Unihedron Spare housing cap","offer_id":46118742589669,"sku":"UH-SQM-WPH-SPARE","price":16.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/LE_H_ff8d4ebc-2412-43e6-a477-5a8e8082d4f0.png?v=1777043448"},{"product_id":"unihedron-sky-quality-meter-window-mount-sqm-wm","title":"Unihedron Sky Quality Meter - Window mount (SQM-WM)","description":"\u003ch2\u003eUnihedron Sky Quality Meter - Window mount\u003c\/h2\u003e\n\u003cp\u003e\u003cimg\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\n\u003cp\u003eThis Window mounting bracket is used for moving light pollution studies while a \"connected\" meter and GPS are attached to a computer using UDM logging continuously with the GPS option enabled described\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/forum\/index.php?topic=55.msg92#msg92\"\u003ehere\u003c\/a\u003e.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eThe relatively broad \"head\" on the part of the bracket that mounts to the window should accommodate a range of window seal contours. The adjustable connection between the window mount and SQM mount allows for vertical mounting regardless of window slope.\u003c\/p\u003e\n\u003cp\u003eAdjustment can be done by eye, or with a level held against the meter, or a smart phone with built-in inclinometer app to adjust the vertical angle.\u003c\/p\u003e\n\u003cp\u003eThe unit should be mounted near the part of the window that has a curve which comes closest to horizontal.\u003c\/p\u003e\n\u003cp\u003eThe adjustable connection allows adjustment in yaw, position along the window curve becomes the pitch adjustment.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUnihedron Sky Quality Meter - Window mount\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eWarranty: Unihedron Warranty\u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Default Title","offer_id":46119063748837,"sku":"UH-SQM-WM","price":34.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/LE_H_eb17dfaf-6807-4e43-85f7-0bf5b3c4b752.png?v=1777045117"},{"product_id":"unihedron-sky-quality-meter-solar-charger","title":"Unihedron Sky Quality Meter Solar charger","description":"\u003ch2\u003eUnihedron Sky Quality Meter Solar charger \u003c\/h2\u003e\n\u003cp\u003eThis unit mounts to the sunny side of the SQM-H housing and charges up the 4xAA NiMH batteries (included) so that the SQM-LU-DL can operate throughout the nighttime. It replaces the original SQM-LU-DL battery pack.\u003c\/p\u003e\n\u003cp\u003eThe clear plastic bottle keeps rain and snow from the inside.\u003c\/p\u003e\n\u003cp\u003eThe smooth round shape reduces the possibility that a passing creature or person will catch on it.\u003c\/p\u003e\n\u003cp\u003eA drainage hole in the bottom allows accumulated moisture to escape.\u003c\/p\u003e\n\u003cp\u003eAn open-cell foam insert prevents insects from crawling up inside the container.\u003c\/p\u003e\n\u003cp\u003eEven cloudy days provide sufficient charging to keep the batteries topped up.\u003c\/p\u003e\n\u003cp\u003eAt one reading every five minutes, the SQM-LU-DL can hold almost a year's worth of readings without changing batteries.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003e-One reading every five minutes\u003c\/p\u003e\n\u003cp\u003e-Charges up the 4xAA NiMH batteries (included)\u003c\/p\u003e\n\u003cp\u003e-SQM-LU-DL can hold almost a year's worth of readings without changing batteries\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cp\u003e\u003cb\u003eWhat you get with the SQM-SC (Solar charger):\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-sc\/photos\/whatyouget.jpg\"\u003e\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-sc\/photos\/whatyouget_thumbnail.jpg\" width=\"150\" height=\"150\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd valign=\"top\"\u003eThis Solar charger unit includes everything required to power the SQM-LU-DL:\n\u003cul\u003e\n\u003cli\u003eClear plastic bottle to protect the charging circuit from the elements.\u003c\/li\u003e\n\u003cli\u003eSolar panel with battery charging circuit with attached 32\" (81cm) USB cable to connect to SQM-LU-DL.\u003c\/li\u003e\n\u003cli\u003e4-AA NiMH batteries\u003cspan\u003e \u003c\/span\u003e\u003ci\u003e(manufacturer may vary)\u003c\/i\u003e.\u003c\/li\u003e\n\u003cli\u003eStainless steel clamp to mount to existing SQM-H housing.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-sc\/SolarChargerInstallation.pdf\"\u003eInstallation instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cb\u003eWhat you get with the SQM-DLHSC (Solar DL kit):\u003c\/b\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-sc\/photos\/whatyougetDLEnviro.jpg\"\u003e\u003cimg src=\"http:\/\/unihedron.com\/projects\/sqm-sc\/photos\/whatyougetDLEnviro_thumbnail.jpg\" width=\"150\" height=\"150\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul\u003e\n\u003cli\u003eClear plastic bottle to protect the charging circuit from the elements.\u003c\/li\u003e\n\u003cli\u003eSolar panel with battery charging circuit with attached 32\" (81cm) USB cable to connect to SQM-LU-DL.\u003c\/li\u003e\n\u003cli\u003e4-AA NiMH batteries\u003cspan\u003e \u003c\/span\u003e\u003ci\u003e(manufacturer may vary)\u003c\/i\u003e.\u003c\/li\u003e\n\u003cli\u003eStainless steel clamp to mount to the included SQM-H housing.\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-sc\/SolarChargerInstallation.pdf\"\u003eInstallation instructions (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003eSQM-LU-DL meter\u003c\/li\u003e\n\u003cli\u003eCalibration sheet indicates unit USB serial number, and calibration values\u003c\/li\u003e\n\u003cli\u003eWeatherproof housing\u003c\/li\u003e\n\u003cli\u003eUSB 2.0 A to B cable, 1ft length, data cable for programming and data retrieval.\u003c\/li\u003e\n\u003cli\u003eNo SQM-LU-DL users manual, you can get the manual online\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LU-DL\/SQM-LU-DL_Users_manual.pdf\"\u003ehere\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003eNo CD, you can get all required software from\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/\"\u003ehere\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003eNo extra battery pack or batteries as the solar charger includes batteries\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eManuals: \u003c\/p\u003e\n\u003cp style=\"margin-bottom: 0.66rem;\"\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/sqm-sc\/SolarChargerInstallation.pdf\" style=\"font-size: 0.875rem;\"\u003eInstallation instructions (PDF)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"http:\/\/unihedron.com\/projects\/darksky\/cd\/SQM-LU-DL\/SQM-LU-DL_Users_manual.pdf\"\u003eSQM-LU-DL_Users_manual.pdf (unihedron.com)\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/unihedron-warranty\" title=\"Warranty: Unihedron 1 year warranty\" rel=\"noopener\" target=\"_blank\"\u003eWarranty:\u003c\/a\u003e\u003ca href=\"https:\/\/istronomyplus.com\/pages\/unihedron-warranty\"\u003e Unihedron Warranty — Astronomy Plus\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Solar Charger (SQM-SC)","offer_id":46137164923109,"sku":"UH-SQM-SC-2","price":181.0,"currency_code":"CAD","in_stock":true},{"title":"Solar DL kit (SQM-DLHSC)","offer_id":46137164955877,"sku":"UH-SQM-DLHSC","price":568.35,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/LE_H_91453aac-cfb5-45a6-9df6-95f8308d33e9.png?v=1777043458"},{"product_id":"unihedron-broad-spectrum-emitter-nu-b","title":"Unihedron Broad Spectrum Emitter (Nu-B)","description":"\u003ch2\u003eUnihedron Broad Spectrum Emitter \u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"top\"\u003eA source of broad spectrum (white), blue, green, yellow, orange\/IR, and red light for optics demonstrations and experiments.\u003cbr\u003e\u003cbr\u003eDesigned by Dr. Doug Welch and Anthony Tekatch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFeatures:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSingle button operation\u003c\/li\u003e\n\u003cli\u003eIndividual selection of sources or all six at once\u003c\/li\u003e\n\u003cli\u003eTwo brightness levels\u003c\/li\u003e\n\u003cli\u003eFiltered LED light results in narrow emission bandwidths\u003c\/li\u003e\n\u003cli\u003eMicroprocessor-controlled\u003c\/li\u003e\n\u003cli\u003eBattery-operated - no AC adapter, wires, or plugs\u003c\/li\u003e\n\u003cli\u003eBatteries required (2 CR2032 Lithium coin cells)\u003c\/li\u003e\n\u003cli\u003eAuto-off after 2 hours of use\u003c\/li\u003e\n\u003cli\u003eDesigned for maximum battery life - 100+ hours\u003c\/li\u003e\n\u003cli\u003eHolographic diffraction grating slide included\u003c\/li\u003e\n\u003cli\u003eNear-monochromatic light without the safety concerns of laser diodes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOperates from two CR2032 batteries (not included).\u003c\/li\u003e\n\u003cli\u003eSize 3.6 x 2.6 x 1.1 in.\u003c\/li\u003e\n\u003cli\u003eSpecifications are subject to change without notice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eIn the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNu-B-color, All LEDs are visible (white, blue, green, yellow, orange, and red).\u003cspan\u003e \u003c\/span\u003e\u003ca rel=\"noopener\" href=\"http:\/\/unihedron.com\/projects\/nu-b\/NuBmanual_version1.1-Color.pdf\" target=\"_blank\"\u003e\u003cb\u003e\u003c\/b\u003e\u003c\/a\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NuBmanual_version1.1-Color.pdf?v=1727383580\" title=\"Unihedron Broad Spectum Instruction Sheet\" target=\"_blank\"\u003e\u003cb\u003eView instruction sheet\u003c\/b\u003e\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eOR\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eNu-B-IR, One IR LED included (white, blue, green, yellow, red, and infrared).\u003cspan\u003e \u003cbr\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWarranty \u0026amp; Manual\u003c\/h3\u003e\n\u003cp\u003eNu-B-color Manual:  \u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NuBmanual_version1.1-Color.pdf?v=1727383580\" rel=\"noopener\" target=\"_blank\"\u003e\u003cb\u003eView instruction sheet\u003c\/b\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eNu-B-IR Manual: \u003cspan\u003e \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/NuBmanual_version1.1-IR.pdf?v=1727383711\" rel=\"noopener\" target=\"_blank\"\u003e\u003cb\u003eView instruction sheet\u003c\/b\u003e\u003c\/a\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Unihedron","offers":[{"title":"Nu-B-color","offer_id":46137191825637,"sku":"UH-Nu-B-color","price":93.0,"currency_code":"CAD","in_stock":true},{"title":"Nu-B-IR","offer_id":46137191858405,"sku":"UH-Nu-B-IR","price":93.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/LE_H_94bee0af-e7bc-4ae4-bb57-b3208a77865f.png?v=1777045117"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/collections\/unihedron_logo.jpg?v=1732135645","url":"https:\/\/istronomyplus.com\/collections\/unihedron.oembed","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}