Takahashi TOA-150 specifications
Optical features
| Spec. | TOA-150 |
|---|---|
| Optical design | Triplet Ortho Apochromatique |
| Optical mounting | Air spaced |
| Glass types | SD/ED |
| Optical coatings | Fully Multi-Coated |
| Aperture | 150mm |
| Resolution | 0.77" |
| Visual limiting magnitude | 12.7 |
| Light grasp | 459x |
| Standard | |
| Focal length | 1100mm |
| Focal ratio | F/7.3 |
| With TOA-FL35 flattener | |
| Focal length | 1080mm |
| Focal ratio | F/7.2 |
| Image circle | 40mm |
| With TOA-FL67 flattener | |
| Focal length | 1090mm |
| Focal ratio | F/7.3 |
| Image circle | 90mm (60% non-vignetted) |
| With TOA-RD reducer | |
| Focal length | 860mm |
| Focal ratio | F/5.7 |
| Image circle | 50mm (60% non-vignetted) | With Extender-TOA 1.6 |
| Focal length | 1760mm |
| Focal ratio | F/11.7 |
| Image circle | 40mm |
Mecanical specifications
Specifications
| Spec. | TOA-150 |
|---|---|
| ***Retractable dew-shield | |
| Rack-and-pinion focuser diameter | 101.6mm |
| Tube length (mini/maxi) | 1100mm-1290mm (with standard accessories)*** |
| Tube diameter | 179mm |
| Tube weight | 14.6 kg (balancing couterweight cradle : 4.8 kg) |