{"product_id":"askar-151phq-f-7-quadruplet-air-spaced-astrograph-151phq","title":"Askar 151PHQ f\/7 Quadruplet Air-Spaced Astrograph (151PHQ)","description":"\u003ch2\u003eAskar 151PHQ f\/7 Quadruplet air-spaced Astrograph\u003c\/h2\u003e\n\u003cdiv class=\"e_container-3 s_layout response-transition\"\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\n\u003cp class=\"e_text-8 s_title response-transition\"\u003e151PHQ is a long-focal-ratio, flatfield astrograph newly launched after 130PHQ and also the biggest refractor of Sharpstar products till now. Instead of buying extra flatteners, calculating the backfocus of the flattener, or making a tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.\u003c\/p\u003e\n\u003ca class=\"e_button-50 s_button1 btn btn-primary\" href=\"https:\/\/www.sharpstar-optics.com\/Contact.html#c_form_059-1666352670871\" data-mce-href=\"https:\/\/www.sharpstar-optics.com\/Contact.html#c_form_059-1666352670871\" target=\"_blank\"\u003e\u003cspan\u003e\u003c\/span\u003e\u003c\/a\u003e\u003cimg data-mce-fragment=\"1\" src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\" data-mce-src=\"https:\/\/omo-oss-image.thefastimg.com\/common\/design\/detail\/98c37934-096a-485e-9e5f-3aa0692db920.jpg\"\u003e \u003c\/div\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ is a long-focal-ratio, flatfield astrograph newly launched after 130PHQ and also the biggest refractor of Sharpstar products till now. Instead of buying extra flatteners, calculating the backfocus of the flattener, or making a tedious connection to match the distance, astrophotographers can simply equip it with any possible imaging devices, make the target stay at the focus, and then the whole optical system is perfect for imaging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ has a focal ratio of f\/7 and a focal length of 1057mm. The aperture is 151mm, which is the largest of Askar refractors so far. The quadruplet lens with two ED glasses offers excellent control of chromatic and other aberrations. With its self-flattening design, 151PHQ offers strong advantages in the astronomical shooting. It supports a medium frame 60mm image circle, has a fine spot diagram with tiny distortion of the peripheral stars, and its central RMS radius is less than 2 microns.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e151PHQ comes with a telescopic lens hood, a high-quality CNC machined and painted tube, and attractive decorative parts. The 3.4\" R\u0026amp;P focuser comes with M68\/M54\/M48 adapters, 360°rotator and a finder base. When used with the 3\" 0.7 x flat field reducer, the telescope can reach a focal ratio of f\/4.9 and a focal length of 740mm, effectively reducing exposure time. The multifunctional handle comes with a central slot for attaching an M6 screw with an M6 screw hole. A standard 300mm Losmandy dovetail plate, together with a sturdy double tube ring, is perfectly suited for viewing and shooting.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3 class=\"cbox-3-1 p_item\"\u003eTechnical Specifications \u003c\/h3\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\n\u003ctable width=\"84.20%\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eAperture size\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e151mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFocal length\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e1057mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFocal ratio\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003ef\/7\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eObjective lens\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eQuadruplet air-spaced APO (including two ED glass)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eImage circle\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e60mm\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eMaximum accessory connection\u003c\/p\u003e\n\u003cp\u003e(with the focuser fully retreated)\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eImaging mode：\u003c\/p\u003e\n\u003cp\u003e78mm（from the base of M48×0.75 male thread）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cp\u003eObserving mode ：\u003c\/p\u003e\n\u003cp\u003e119mm （from the end of1.25\" eyepiece holder）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTotal length\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eObserving mode：930.3mm（with the dew shield contracted）1117.8mm（with the dew shield fully stretched）\u003cbr\u003eImaging mode：976.8mm（with the dew shield contracted）1164.3mm（with the dew shield fully stretched）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eOTA Weight\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e11.6kg\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eTotal Weight (Including tube ring\u0026amp;dovetail plate）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003e13.7kg\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eRear-end thread type\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eM86×1-M68×1\u003cbr\u003eM68×1-M54×0.75\u003cbr\u003eM54×0.75-M54×0.75\u003cbr\u003eM54×0.75-M48×0.75（built-in M48×0.75 filter thread）\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eFour-piece photographic end adapter\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eM48×0.75\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eStandard package items\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd colspan=\"2\"\u003e\n\u003cp\u003eAn 151PHQ OTA，a pair of tube rings, a handle, an Askar losmandy 300mm dovetail plate, a set of 4-piece photographic adapters, an aluminum box，a manual\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003ch3 class=\"cbox-3-1 p_item\"\u003eIn the Box\u003c\/h3\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\n\u003cul\u003e\n\u003cli\u003e151PHQ OTA\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003ePair of Tube Rings\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eHandle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eLosmandy 300mm Dovetail Plate\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSet of 4-piece Photographic Adapters\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAluminum Box\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eManual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-mce-fragment=\"1\"\u003eWarranty \u0026amp; Manuals\u003c\/h3\u003e\n\u003cp data-mce-fragment=\"1\"\u003eAskar Warranty\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"cbox-3-1 p_item\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"e_container-11 s_layout\"\u003e\n\u003cdiv class=\"cbox-11-0 p_item\"\u003e\n\u003cdiv class=\"e_container-52 s_layout\"\u003e\n\u003cdiv class=\"cbox-52-0 p_item\"\u003e\n\u003cdiv class=\"e_loop-35 s_list\" needjs=\"true\" ds-id=\"\" elem-id=\"e_loop-35\"\u003e\n\u003cdiv class=\"\"\u003e\n\u003cdiv class=\"p_list\"\u003e\n\u003cdiv class=\"cbox-35 p_loopitem\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":44233727541477,"sku":"ASK-151PHQ","price":6299.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/6245\/2965\/files\/askar-151phq-f7-quadruplet-air-spaced-astrograph-151phq-astronomy-plus-1.png?v=1715808652","url":"https:\/\/istronomyplus.com\/products\/askar-151phq-f-7-quadruplet-air-spaced-astrograph-151phq","provider":"Astronomy Plus – Telescopes \u0026 Astrophotography Canada","version":"1.0","type":"link"}