[ Bosma 80-900 product photo ]
Release Date: 1970.12
brand: Bosma
type: Telescope
detail:
Telescope works: SEMI-APO refractive focal length: 900mm focal ratio: 11.3 Lens: 80mm Resolution: 1.45 inches arc second set of light power: 131 * limiting magnitude: 11.3 Eyepiece: SWA26 (2 inches) - optional search star Mirror: 1 * 30 red dot finder
detail more:
Basic parameters
| Telescope works | SEMI-APO Refracting | |
| Focal length | 900mm | |
| Coke ratio | 11.3 | |
| Objective | 80mm | |
| Set of light power | 131 * | |
| Resolution | 1.45 inches arcsec | |
| Limiting magnitude | 11.3 | |
| The length of the primary mirror | 910mm | |
| The weight of the primary mirror | 5000g | |
| Focus Block | 2-inch Focus Block, no teeth |
| Finder | 1 * 30 red dot finder | |
| Zenith mirror | 90 degree prism (2 inches) - optional | |
| Eyepiece | SWA26 (2 inches) - optional |