OTA · 2008–
Astro-Tech AT66ED
Key specifications
| Aperture | 66 mm |
|---|---|
| Focal length | 400 mm |
| Focal ratio | f/5.9 |
| Optical design | ED Doublet |
| Weight | 1.8 kg |
All specifications
| Lens coating | Fully multicoated |
|---|---|
| Focuser type | Dual-speed Crayford, 11:1, rotatable |
| Tube length | 292 mm |
| Dovetail | Vixen |
About
66 mm f/5.9 air-spaced ED doublet refractor (~388 mm focal length). The original compact ED doublet that Astronomy magazine called 'a product everyone should own'; superseded by the AT72ED/AT72EDII line.
Where to buy
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