OTA · MSRP $849
Astro-Tech AT66EDQ f/7 ED Quadruplet Apochromatic Refractor OTA
Key specifications
| Aperture | 66 mm |
|---|---|
| Focal length | 462 mm |
| Focal ratio | f/7 |
| Optical design | Quadruplet APO |
| Weight | 3.6 kg |
All specifications
| Focuser type | 2.8" dual-speed rack-and-pinion, 10:1, 360° rotation adjuster |
|---|---|
| Tube length | 343 mm |
About
A 66 mm f/7 air-spaced quadruplet with two ED elements — FK-61 plus an undisclosed glass — giving a flat, sharp 43.2 mm image circle with no external flattener. Carries a 2.8" dual-speed rack-and-pinion focuser with a built-in 360° rotation adjuster and M63, M54 and M48 male threads plus a 2" compression-ring adapter.
Where to buy
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