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Takahashi TOA-150B (OTA) tube only with 50.8/31.75 adapter with Retractable lens shade, 4" focuser and camera angle adjuster
Specification:
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 |