Takahashi FSQ-106ED (Europe) specifications
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The astrophotographers see in the FSQ-106ED one of the best astrographes available for the amateur astronomers. With its focal length of 530mm, an image circle of 88mm and a photographic field of 9,5°, it acts as teleobjective for most powerful CCD and DSR/DSLR cameras of the market.
Based on a Petzval quadruplet optical design with apochromatic ED glasses, the FSQ-106ED is optimized for wide-field imaging of the deep sky. It offers a flat field, and comes equiped with a built-in camera angle adjuster and an oversized rack-and-pinion focuser. To minimize the size of the optical tube, it includes a retractable dewshield and an important backfocus
Optical specifications
| Spec. | FSQ-106ED |
|---|---|
| Optical design | Modified Petzval quadruplet apochromat |
| Aperture | 106 mm |
| Standard | |
| Focal length | 530 mm |
| Focal ratio | F/5.0 |
| Resolution | 1.09" |
| Limiting magnitude | 11.8 |
| Light grasp | 220x |
| Image circle | 88 mm |
| Photo field | 9.5° |
| Back focus | 186.38 mm |
| Metal back | 178 mm |
| With QE-Reducer | |
| Focal length | 385mm |
| Focal ratio | F/3.6 |
| Image circle | 44mm |
| Photo field | 6.5° |
| Metal back | 72.2 mm |
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