{"product_id":"askar-fra400c-72-mm-f-5-6-quintuplet-dual-ed-apo-refractor-fra400c","title":"Askar FRA400C - 72 mm f\/5.6 Quintuplet Dual ED APO Multi-Functional Refractor - FRA400C","description":"\u003ccenter\u003e\n\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/JwuV7BSWoRY?si=435X0mxVDwhXPZGm\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003cspan style=\"color: #f01414;\"\u003e\u003c\/span\u003e\n\u003c\/center\u003e\n\u003ch3 style=\"text-align: center;\"\u003eAskar FRA400C 72mm Quintuplet Multifunctional Refractor\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eDesigned for astrophotography, daytime photography \u0026amp; visual observations day \u0026amp; night!\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAdjustable aperture from f\/22 to f\/5.6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003e72 mm Quintuplet Petzval self-flattening design with two ED elements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFull-frame 44 mm Image Circle\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eSupports 50-60mm focus distance (55mm is recommended)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated helical focusing ring with locking screw\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eThree photographic adapter sizes at rear (M72, M54 \u0026amp; M48)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eBuilt-in 2\" filter threads in M48 adapter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWith 2\" and 1.25\" adapters \u0026amp; 290mm Vixen dovetail plate included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eEntire OTA easily rotates for camera angle adjustment\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRetractable lens hood\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"text-align: left;\"\u003eAskar calls the FRA400C their budget-friendly version of the FRA400.  Unlike the FRA400, whose main focus (no pun intended) is astrophotography, complete with a heavy-duty 3\" focuser \u0026amp; rotator, the FRA400C is designed more like a multi-functional camera lens, and is great for daytime photography, day\/night visual use, and astrophotography.  Like a heavy-duty manual focus camera lens, the Askar FRA400C is designed with an integral helical focus ring and aperture ring that adjusts the focal ratio from f\/5.6 to f\/22.  While this system does not come with a CAA (camera angle adjuster), you can easily rotate the entire OTA to adjust the angle for imaging.  \u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/FRA400C_Quint_Optics.jpg?v=1744312344\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003eOne important feature of the FRA400C is the optics, and Askar has used the same quintuplet lens design that they use on their more expensive FRA400.  With a Petzval optical structure, this scope does not need a flattener, and back focus is easier to deal with.  The FRA400C supports a distance of between 50 mm \u0026amp; 60 mm.\u003c\/p\u003e\n\u003cp\u003eWe definitely like the multi-functionality of the FRA400C.  You can add an optional focal reducer if you like, which would bring the effective focal ratio down to f\/3.9.  For imaging, you can choose from three different photo adapter sizes available on the rear of the scope...M72*1, M54*0.75, or M48*0.75 with a built-in 2\" filter adapter.  If you'd like to do some observing, this 72mm lens comes with a 2\" and 1.25\" eyepiece adapter and accepts standard eyepieces and other accessories.  Speaking of accessories, like the FRA400, this Quint accepts popular motorized focusers from ZWO, iOptron, QHY or PrimaLuceLab!\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/FRA400C_Applications.jpg?v=1744313079\" alt=\"\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003ch3\u003eFRA400C Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eAperture: 72mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocal Length: 400mm\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocal Ratio: f\/5.6\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eObjective Lens: Quintuplet dual ED air-spaced APO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFormat: 44mm. Full-Frame\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eAperture Blades: 17 pieces\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eGraded Aperture: f\/5.6-f\/22\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eClosest Focus Distance: 5m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFocusing Mode: Manual focus\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eFilter Diameter: M82\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eTotal Length: 370mm (inclulding dew shield); 420mm (without dew shield)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eOTA Weight: 2.68kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eTotal Weight (including handle \u0026amp; dovetail plate): 3.18kg\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRear-end Adapter: M72\/M54\/M48(with M48×0.75 filter thread)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eRear-end Connection Distance: Supports 50-60mm range (Recommended 55mm)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul\u003e\n\u003cli\u003eWhat's In the Box: FRA400C with dovetail, 1.25inch\/2inch adapter \u0026amp; manual\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" title=\"Askar FRA400C User's Manual (PDF)\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/FRA400C_User_s_Manual.pdf?v=1744314611\" target=\"_blank\"\u003eAskar FRA400C User's Manual (PDF)\u003c\/a\u003e\u003c\/p\u003e","brand":"Askar","offers":[{"title":"Default Title","offer_id":41809789517937,"sku":"ASK-FRA400C","price":804.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/FRA400C_Hero.png?v=1776458966","url":"https:\/\/khanscope.com\/fr-fr\/products\/askar-fra400c-72-mm-f-5-6-quintuplet-dual-ed-apo-refractor-fra400c","provider":"Khan Scope Centre","version":"1.0","type":"link"}