OTA · MSRP $25,000
iOptron Photron 20 inch Truss Tube RC
Key specifications
| Aperture | 500 mm |
|---|---|
| Focal length | 4000 mm |
| Focal ratio | f/8 |
| Optical design | Ritchey-Chrétien |
| Weight | 57.61 kg |
All specifications
| Focuser type | 10:1 dual-speed linear-bearing Crayford, 3 inch |
|---|---|
| Tube length | 1260 mm |
| Dovetail | Losmandy |
About
A 500 mm f/8 Ritchey-Chretien astrograph on a carbon-fibre truss tube, with a 3-inch linear-bearing dual-speed Crayford focuser, Losmandy-style dovetail bars top and bottom, and three built-in primary-mirror cooling fans. Sold as a special-order item.