OTA · MSRP $1,795
Astro-Tech AT92 f/5.5 Triplet APO Refractor OTA
Key specifications
| Aperture | 92 mm |
|---|---|
| Focal length | 506 mm |
| Focal ratio | f/5.5 |
| Optical design | Triplet APO |
| Weight | 3.29 kg |
All specifications
| Lens coating | Fully multicoated, latest antireflection materials |
|---|---|
| Focuser type | 2.5" dual-speed rotating rack and pinion, 10:1 fine focus |
| Tube length | 406.4 mm |
| Dovetail | Vixen |
About
A very compact 92 mm f/5.5 apochromatic triplet using an ED centre element with a rear lanthanum element in a collimatable cell, descended from the TMB-92 design and revised by Roger Ceragioli. Fully multicoated with knife-edge baffles, a 2.5" dual-speed rotating rack-and-pinion focuser, retractable dew shield, rings, Vixen dovetail and a hard case.
Where to buy
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