Sharpstar Optics, founded in 2000, is specialized in research, development and production in the field of astronomy. Sharpstar and Askar are the two of the company' s brands dedicated to providing customers with high-quality products and services. In addition to a series of high-quality astronomical telescopes widely praised by the market, it also has a strong OEM background for more than 10 years.
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Askar´s filter drawer allows filter changes to as little as 18 mm and provides maximum versatility for astrophotography.
Connections at the telescope side: T2 (M42x0.75), M48x0.75 and M54x0.75 female thread - all adapters included Connections on camera side: T2, M48x0.75 and M54x0.75 male thread - all adapters included Inserts for mounted 1.25" and 2" filters included Inserts for unmounted 31 mm, 36 mm and 50 mm filters included in scope of delivery Height of the filter changer only 18 mm (without external thread) The set consists of 10 parts - filters are not included in the scope of delivery The filter holder is securely fixed in the base body with magnetic force This off-axis guider from ASKAR convinces with a versatile adaptation for almost all telescopes and cameras - usable up to full frame format.
Connections at the telescope side: M54x0.75, M48x0.75 and T2 (M42x0.75) female thread Connections at the camera side: M54x0.75, M48x0.75 and T2 (M42x0.75) male thread Three orientations of the camera to the off-axis guider are possible The optically effective length of the OAG is 19.5 mm, the external thread on the camera side does not count. Sufficient space for a filter wheel or filter drawer between OAG and the camera, also for correctors with 55 mm working distance Side mount 1.25" connector and T2 male thread with fine focusing - always a sharp guiding star Large 10x10 mm prism for a large field for the autoguider Prism with prism holder can be adjusted for best possible illumination FMA180 pro is a compact astrograph for astrophotography with more integrated functions and a more dedicated design.
Two ED glasses apochromat with built-in corrector 180 mm focal length 40 mm aperture gather enough light for a fast system 44 mm image circle supports full frame sensors 360° rotator allows easy image composition Internal focusing for high stability M48 camera conection with 55 mm back focus Mounting with Vixen style dovetail plate or finder base bracket Comes with finder shoe Only 0.8 kg weight OAG, cameras and mount are for demonstration purposes and are not included. The adapter enables the connection of photo accessories with M48 thread to the FMA 180 telephoto lens
Connection at the telescope side: M42x0.75 female thread Connection at camera side: M48x0.75 male thread Working distance from M48 thread: 55 mm The Askar 120APO is a 120 mm aperture, 840 mm focal length, and f/7 native focal ratio apo refractor with many useful features and two corrector options.
Aperture 120 mm - focal length 840 mm - focal ratio f/7 Triplet objective with one ED element Stable 3.3" RAP focuser with dual speed, 360° rotation and 100 mm travel Sufficient working distance for observing with 2" accessories and for photography Flattener and reducer (0.8x) available CNC tube rings with Vixen GP style dovetail bar and carrying handle Two finder shoes With optical test by Teleskop-Service on the optical bench (autocollimation) - star test extrafocal, intrafocal and focal as well as Ronchi test and report - so you have a 100% tested telescope This flattener is designed for the Askar 103APO and corrects curvature and coma.
Designed for the Askar 120APO Corrects curvature and cona Screwed to the focuser Camera-side threads M54x0.75 and M48x0.75 55 mm backfocus from the base of the M48 thread This reducer effectively shortens the exposure time and significantly increases the field of view.
Designed and optimized for the Askar 120mm f/7 APO Reduces the focal length by a factor of 0.8 to 672 mm Screwed to the focuser Camera-side threads M54x0.75 and M48x0.75 55 mm backfocus from the base of the M48 thread The Askar 203APO is one of the largest apochromatic refractors from series production - a powerful refractor for your observatory
Aperture 203 mm - focal length 1421 mm - focal ratio f/7 Air-spaced triplet APO objective with one ED element Stable 3.5" RAP focuser with speed reduction and 100 mm travel Working distance suitable for photo correctors and 2? accessories for observation Suitable for EAF motorized focus Two finder shoes - 1x for finder - 1x for mini guide scope The Askar 160APO is an apo refractor with 160 mm aperture, 1120 mm focal length and a focal ratio of f/7 with many practical features.
Aperture 160 mm - focal length 1120 mm - focal ratio f/7 Air-spaced triplet objective with one ED element Stable 3.5" dual-speed RAP focuser with 360° rotator and 100 mm drawtube travel Sufficient working distance for observation with 2" accessories and for photography CNC tube rings with dovetail bar (Losmandy) and carrying handle Two finder shoes The Askar 1.0x corrector for the 160 mm f/7 triplet apo provides a very good image quality across the entire field of view.
developed for the Askar 160APO provides very good image quality across the entire field of view suitable for full-frame cameras The Askar 140APO is an apo refractor with 140 mm aperture, 980 mm focal length and a focal ratio of f/7 with many practical features.
Aperture 140 mm - Focal length 980 mm - Focal ratio f/7 Triplet objective with one ED element Stable 3.5" dual-speed RAP focuser with 360° rotation connection and 100 mm adjustment travel Sufficient working distance for observation with 2" accessories and for photography Flattener and two reducers available (0.8x) CNC tube rings with dovetail bar (Losmandy style) and carrying handle Two finder shoes The Askar 1.0x corrector for the 140mm f7 Triplet APO provides a very good image quality across the entire field of view.
developed for the Askar 140APO provides very good image quality across the entire field of view suitable for full-frame cameras