OTA · 2024–
Askar 71F
Key specifications
| Aperture | 71 mm |
|---|---|
| Focal length | 490 mm |
| Focal ratio | f/6.9 |
| Optical design | Quadruplet APO |
| Weight | 2.5 kg |
All specifications
| Focuser type | 2.4" dual-speed rack & pinion, 1:10, 360 rotator |
|---|---|
| Tube length | 372.5 mm |
| Dovetail | Vixen |
About
71mm f/6.9 self-flattening quadruplet astrograph (3+1) with one ED element. 490mm focal length, 44mm full-frame flat field with no separate flattener or back-focus calc; dual-speed 2.4" focuser (EAF-ready), retractable dew shield, M64/M54/M48 rear threads. Doubles as a daytime spotting scope.
Where to buy
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