Askar 91F Flat-Field Quadruplet Astrograph
1 044,00 €91mm quadruplet self-flattened astrograph — the largest in the F-series. More light gathering and resolution for both imaging and visual use.
Askar telescopes and astrographs
Showing 25–48 of 48 results

91mm quadruplet self-flattened astrograph — the largest in the F-series. More light gathering and resolution for both imaging and visual use.

Extreme f/3.9 full-frame reducer for the FRA400 and FRA500 astrographs. Four-element design for dramatically reduced exposure times.

Extreme f/3.9 full-frame reducer optimized for the Askar FRA600 astrograph. Four-element design for dramatically faster deep-sky exposures.

Compact 135mm APO telephoto lens for ultra-portable wide-field astrophotography. The original Fast Mini Astrograph that started the FMA series.

Triplet air-spaced 180mm APO telephoto lens with built-in M48 and M42 threads. Ultra-portable with excellent chromatic correction.

Upgraded 180mm APO telephoto lens with enhanced optics and more options than the standard FMA180. Compact and sharp for widefield imaging.

230mm APO telephoto lens — the longest in the FMA series. More reach while maintaining the compact, portable design philosophy.

Compact 60mm f/5 Petzval astrograph with 300mm focal length. Built-in flat-field correction in an ultra-portable form factor.

The original FRA series flatfield refractive astrograph. 400mm focal length with built-in flat-field correction — the scope that started it all.

0.7x full-frame reducer for the Askar FRA400C astrograph. Significantly faster imaging with wider field and full-frame coverage.

Motorized autofocus kit for the Askar FRA400C astrograph. Universal design compatible with most electronic focusers for automated focusing.

Budget-friendly version of the popular FRA400 flatfield astrograph. Same optical quality for astrophotography, visual, and daytime photography.

90mm f/5.6 quintuplet flatfield astrograph with 500mm focal length. Built-in flat-field correction bridges the gap between the FRA400 and FRA600.

108mm f/5.6 quintuplet flatfield astrograph — the largest FRA model. 600mm focal length with built-in flat-field correction for demanding deep-sky imaging.

Lightweight harmonic drive German equatorial mount with zero-backlash tracking. Portable and precise — ideal for field astrophotography.

Carrying handle compatible with SQA70, SQA85, SQA106, and SQA130 astrographs. Safer transport and easier mounting of your SQA telescope.

Height extension for SQA70/85/106/130 astrographs. Raises the optical tube for extra accessory clearance or improved mount balance.

106mm quintuplet Petzval astrograph with SD glass. Large aperture for detailed imaging of fainter deep-sky targets with flat-field correction.

Flagship 130mm quintuplet Petzval astrograph with dual SD glass elements. Maximum light-gathering power and resolution in the SQA series.

Motorized autofocus kit for the Askar SQA55 astrograph. Universal design compatible with most electronic focusers.

Quick-release carrying handle for the Askar SQA55 astrograph. Easy attachment and removal for safe transport and mounting.

Compact 55mm quintuplet Petzval astrograph with air-spaced SD glass. Fast focal ratio and flat field for astrophotography and daytime use.

70mm quintuplet Petzval astrograph with ED glass elements. Naturally flat field and fast focal ratio for deep-sky astrophotography.

85mm quintuplet Petzval astrograph with SD glass. Great balance of aperture, portability, and flat-field performance for deep-sky imaging.