{"product_id":"idas-heuib-ii-h-alpha-enhanced-uv-ir-cut-filter","title":"IDAS HEUIB-II H-alpha Enhanced UV\/IR Cut Filter","description":"\u003ch2\u003eIDAS HEUIB-II H-alpha Enhanced UV\/IR Cut Filter\u003c\/h2\u003e\n\u003cdiv\u003eThe IDAS HEUIB-II (\u003cstrong\u003eH\u003c\/strong\u003e-α \u003cstrong\u003eE\u003c\/strong\u003enhanced \u003cstrong\u003eU\u003c\/strong\u003eV \u003cstrong\u003eI\u003c\/strong\u003eR \u003cstrong\u003eB\u003c\/strong\u003elocking) filter is designed for enhanced spectrum DSLR's and one-shot color CCD astronomical cameras.\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003eBesides removing the IR and UV ends of the spectrum which are often out of focus in refractive optics, it isolates the common H-alpha line relative to the surrounding extreme red end of the spectrum, making it easy to bring out the faint H-alpha emission nebulosity of astronomical photos, yet retain the background color balance of broadband photos. Some comparison shots taken with the enhanced Canon 6DH (standard Canon UV\/IR blocking filter vs. HEUIB-II filter) show a clear difference both in background sky color balance and contrast of H-alpha nebulosity in the extremely faint object IC1396. Note the good background color balance as shown in the histograms of the individual color channels of the HEUIB-II filtered image. \u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\n\u003cimg style=\"float: none;\" height=\"252\" width=\"445\" src=\"https:\/\/www.sciencecenter.net\/hutech\/idas\/heuib-2\/heuib-ii-s.jpg\" alt=\"IDAS HEUIB-II filter bandpass plot\"\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003eThe HEUIB-II filter also returns normal daylight color balance to spectrum-enhanced cameras as can be seen in this photo at right taken with normal DSLR auto-white-balance (AWB).\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch4\u003eIDAS Filter Technology\u003c\/h4\u003e\n\u003cp\u003eA chain is only as good as its weakest link. This applies as well to an optical system such as a telescope\/filter\/imager system. With this in mind, IDAS filters are manufactured using unique technologies that result in quality that meets or exceeds that of the rest of your optical imaging system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eIGAD (Ion-Gun Assist Deposition)\u003c\/b\u003e This coating technology was originally developed for the optical communications field where long-term stability (\u0026gt;25 years) over harsh field conditions is required. IDAS is the first manufacturer to apply this technology to astronomical filters. This results in superior filters with robust coatings and long-term spectral stability even under temperature and humidity extremes. This stability is especially important for bandpass curves with steep slopes such as H-alpha, LPS filters, and other narrow bandpass filters. IGAD filters virtually eliminate bandpass shifts from the +\/-3 or 4nm typical of standard coating filters.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMBT (Multi Band-pass Technology)\u003c\/b\u003e This is technology originally developed for biomedical microscopes, but improved by IDAS by combining it the IGAD hard-coating technology described above. The excellent filter responses possible with this technology allows IDAS to create very complicated filters for astronomical use such as the unique LPS filter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUFP (Ultra Fine Polish) Finishing\u003c\/b\u003e IDAS filters are polished twice as long as is typical for optical glass. In combination with the use of high-quality substrate glass, no scratches, bubbles, or other defects are visible even under microscopic inspection.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003eAdditional Features:\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003eIdeal precision prime focus T-Adapter for your astro imaging\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSCA Provides 360 deg. rubber square rings contact for the most secure and reliable adaption in your focuser\u003c\/li\u003e\n\u003cli\u003eSCA Brings your Camera to the Closest Optical Axis in the Drawtube\/Visual back for BEST Imaging Result\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates Drawtube\/Visual Back Slop\u003c\/li\u003e\n\u003cli\u003eSCA Eliminates unstable locking from thumbscrew or unified compression ring\u003c\/li\u003e\n\u003cli\u003eSCA Accepts the Imperfection of a Drawtube\/Visual Back\u003c\/li\u003e\n\u003cli\u003eShort SCA Profile Prevents Oscillation\u003c\/li\u003e\n\u003cli\u003eSCA Damps Vibration\u003c\/li\u003e\n\u003cli\u003eSCA Accepts Filter Thread device.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specification\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ctable border=\"0\" cellspacing=\"0\"\u003e\n\u003ccolgroup width=\"174\"\u003e\u003c\/colgroup\u003e \u003ccolgroup width=\"199\"\u003e\u003c\/colgroup\u003e \u003ccolgroup width=\"464\"\u003e\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"18\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eType\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eModel\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"color: #000000;\"\u003eUse \u0026amp; Thickness\u003c\/span\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ca href=\"https:\/\/idas.uno\/space\/en\/IDAS\/frames\/m48.htm\"\u003eM48\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 48S \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48mm P0.75mm, substrate thickness 2.5mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ca href=\"https:\/\/idas.uno\/space\/en\/IDAS\/frames\/m48.htm\"\u003eM48\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 48ST2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM48mm P0.75mm, substrate thickness 2.0mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003e\u003ca href=\"https:\/\/idas.uno\/space\/en\/IDAS\/frames\/m52.htm\"\u003eM52\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II 52ST2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eM52mm P0.75mm, substrate thickness 2.0mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"18\"\u003e\u003cspan style=\"color: #000000;\"\u003eDi2\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II Di2 \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003edrops in AD19.4 drop-in mount adapter\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"33\"\u003e\u003cspan style=\"color: #000000;\"\u003eZF\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II DRE \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003efor use with ZWO cams (fb 6.5mm) and also IDAS AD19.4 drop-in filter mount\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\" align=\"center\" height=\"62\"\u003e\u003cspan style=\"color: #000000;\"\u003eDRE\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003eHEUIB-II ZF \u003c\/span\u003e\u003c\/td\u003e\n\u003ctd valign=\"middle\" align=\"center\"\u003e\u003cspan style=\"color: #000000;\"\u003efor Canon EF-EOSR drop-in mount adapter \u0026amp; Meike MK-EFTR-C (EF-R) \u0026amp; MK-EFTE-C (EF-E) drop-in mount adapters - Details at:\u003ca href=\"https:\/\/idas.uno\/space\/en\/support\/DRE-manual-en.pdf\"\u003e IDAS DRE Filter\u003c\/a\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eIn the Box\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eIdas HEUIB-II Filter at selected size :\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cspan\u003eM48 S\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eM48 ST2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eM52\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eDi2\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eZF\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eDRE\u003c\/span\u003e\u003cspan\u003e\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eManual \u0026amp; Warranty\u003c\/h3\u003e\n\u003cp\u003eIDAS 3-Year Warranty\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"text-align: center;\"\u003e\u003cbr\u003e\u003c\/div\u003e","brand":"IDAS","offers":[{"title":"48mm (2 mm thickness)","offer_id":43673215959269,"sku":"IDA-HEUIBII-48ST2","price":245.0,"currency_code":"CAD","in_stock":true},{"title":"52mm (2 mm thickness)","offer_id":43673216024805,"sku":"IDA-HEUIBII-52ST2","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"Di2 drop in filter","offer_id":43673215992037,"sku":"IDA-HEUIBII-Di2","price":277.0,"currency_code":"CAD","in_stock":true},{"title":"DRT for EF-EOSR","offer_id":43673216057573,"sku":"IDA-HEUIBII-DRT","price":347.0,"currency_code":"CAD","in_stock":true},{"title":"ZF for ZWO Cameras","offer_id":43673216090341,"sku":"IDA-HEUIBII-ZF","price":245.0,"currency_code":"CAD","in_stock":true},{"title":"DZ for use with ZWO cams","offer_id":47817048162533,"sku":"IDA-HEUIBII-DZ","price":297.0,"currency_code":"CAD","in_stock":true},{"title":"DS for use with IDAS AD42-DS","offer_id":47817048621285,"sku":"IDA-HEUIBII-DS","price":297.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/idas-heuib-ii-h-alpha-enhanced-uvir-cut-filter-astronomy-plus.webp?v=1690484525","url":"https:\/\/istronomyplus.com\/products\/idas-heuib-ii-h-alpha-enhanced-uv-ir-cut-filter","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}