Telescopes
Overview
| 90cm - Reflector | Cassegrain - Reflector | Refractor | |
| Focus : | Schmidt / Nasmyth | Cassegrain | - |
| free aperture : | 0.6 m / 0.9 m | 0.25 m | 0.2 m |
| focal length : | 1.8 m / 13.5 m | 2.25 m | 3.0 m |
| f/D : | 3 / 15 | 9 | 15 |
| 90cm - Reflector | Cassegrain - Reflector | Refractor | |
| Focus : | Schmidt / Nasmyth | Cassegrain | - |
| free aperture : | 0.6 m / 0.9 m | 0.25 m | 0.2 m |
| focal length : | 1.8 m / 13.5 m | 2.25 m | 3.0 m |
| f/D : | 3 / 15 | 9 | 15 |