OTA · 2020–
Askar ACL200
Key specifications
| Aperture | 50 mm |
|---|---|
| Focal length | 200 mm |
| Focal ratio | f/4 |
| Optical design | Other |
| Back focus | 55 mm |
| Weight | 1.5 kg |
All specifications
| Focuser type | Manual, coarse and fine |
|---|---|
| Tube length | 195 mm |
| Dovetail | Vixen |
About
200mm f/4 astrographic camera lens — billed as the first camera lens purpose-built for astrophotography. Six elements in three groups with two ED elements, built-in flattener, variable aperture (f/4–f/22), coarse/fine manual focus, ~3m close focus. Uses a 48mm T-ring (sold separately) for full-frame DSLR/mirrorless/astro cameras; 55mm working distance, 2" filter adapter, rotatable collar.
Where to buy
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