Rigs Apochromatic refractors
William Optics Fluorostar 91
Every camera in the catalogue on this telescope, at 432 mm and f/4.7, with the William Optics FLAT 6AIII (0.8x). 42 pairings have a page; 11 sensors are larger than the stated image circle and listed without one.
The telescope
Aperture91mm
Focal length432mm540 mm native
Focal ratiof/4.7
Image circle43mmthe maker's figure
OTA weight4.16kgneeds a corrector
Figures from the maker’s page. Source. Provisional: the row has not yet had a second, human check.
Every camera
Sampling is the star’s FWHM in pixels at 2.5″ seeing; every band is a tradeoff, and wide fields are undersampled on purpose. Each camera name opens its page.
| Camera | Scale | Field | At 2.5″ | Image circle |
|---|---|---|---|---|
| Player One Ares-C Pro | 1.80″/px | 1.50 × 1.50° | 1.39pxundersampled | fits15.99 of 43 mm |
| Player One Poseidon-C Pro | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| Player One Poseidon-M Pro | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| Player One Uranus-C | 1.38″/px | 1.49 × 0.84° | 1.81pxpractical | fits12.85 of 43 mm |
| QHY294M Pro | 2.21″/px | 2.56 × 1.72° | 1.13pxundersampled | fits23.23 of 43 mm |
| QHY600M (SBFL front section) | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| QHY600M (standard, with CAA) | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| ToupTek ATR183C | 1.15″/px | 1.73 × 1.16° | 2.18pxpractical | fits15.73 of 43 mm |
| ToupTek ATR183M | 1.15″/px | 1.73 × 1.16° | 2.18pxpractical | fits15.73 of 43 mm |
| ToupTek ATR2110C | 5.73″/px | 3.08 × 1.94° | 0.44pxbadly undersampled | fits27.41 of 43 mm |
| ToupTek ATR2600C | 1.80″/px | 3.10 × 2.08° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR2600M | 1.80″/px | 3.10 × 2.08° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR294C | 2.21″/px | 2.53 × 1.72° | 1.13pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR294M | 2.21″/px | 2.53 × 1.72° | 1.13pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR3CMOS07100KMA | 2.15″/px | 1.91 × 1.31° | 1.16pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR3CMOS07100KPA | 2.15″/px | 1.91 × 1.31° | 1.16pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR432C | 4.30″/px | 1.91 × 1.31° | 0.58pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR432M | 4.30″/px | 1.91 × 1.31° | 0.58pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR533C | 1.80″/px | 1.50 × 1.50° | 1.39pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR533M | 1.80″/px | 1.50 × 1.50° | 1.39pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR585C | 1.38″/px | 1.49 × 0.84° | 1.81pxpractical | fits12.85 of 43 mm |
| ToupTek ATR585M | 1.38″/px | 1.49 × 0.84° | 1.81pxpractical | fits12.85 of 43 mm |
| ToupTek SkyEye24AC-plus | 2.84″/px | 4.77 × 3.18° | 0.88pxundersampled | sensor larger than the stated image circle43.28 mm diagonal, 43 mm stated |
| ToupTek SkyEye26AC-plus | 1.80″/px | 3.10 × 2.08° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye26AM-plus | 1.80″/px | 3.10 × 2.08° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye45AC-plus | 2.10″/px | 4.78 × 3.19° | 1.19pxundersampled | sensor larger than the stated image circle43.32 mm diagonal, 43 mm stated |
| ToupTek SkyEye62AC-plus | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated |
| ToupTek SkyEye62AM-plus | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated |
| ZWO ASI071MC Pro | 2.28″/px | 3.13 × 2.07° | 1.10pxundersampled | fits28.29 of 43 mm |
| ZWO ASI1600MM Pro | 1.81″/px | 2.33 × 1.76° | 1.38pxundersampled | fits22.06 of 43 mm |
| ZWO ASI183MC Pro | 1.15″/px | 1.75 × 1.17° | 2.18pxpractical | fits15.86 of 43 mm |
| ZWO ASI183MM Pro | 1.15″/px | 1.75 × 1.17° | 2.18pxpractical | fits15.86 of 43 mm |
| ZWO ASI2400MC Pro | 2.84″/px | 4.77 × 3.18° | 0.88pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| ZWO ASI2600MC Air | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC DUO | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC Pro | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Air | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM DUO | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Pro | 1.80″/px | 3.12 × 2.08° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI294MC Pro | 2.21″/px | 2.55 × 1.72° | 1.13pxundersampled | fits23.19 of 43 mm |
| ZWO ASI294MM Pro | 2.21″/px | 2.55 × 1.72° | 1.13pxundersampled | fits23.19 of 43 mm |
| ZWO ASI4400MC Pro | 2.10″/px | 4.77 × 3.18° | 1.19pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| ZWO ASI461MM Pro | 1.80″/px | 5.81 × 4.36° | 1.39pxundersampled | sensor larger than the stated image circle54.82 mm diagonal, 43 mm stated |
| ZWO ASI533MC Pro | 1.80″/px | 1.50 × 1.50° | 1.39pxundersampled | fits15.99 of 43 mm |
| ZWO ASI533MM Pro | 1.80″/px | 1.50 × 1.50° | 1.39pxundersampled | fits15.99 of 43 mm |
| ZWO ASI585MC Air | 1.38″/px | 1.49 × 0.84° | 1.81pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MC Pro | 1.38″/px | 1.48 × 0.83° | 1.81pxpractical | fits12.78 of 43 mm |
| ZWO ASI585MM Air | 1.38″/px | 1.49 × 0.84° | 1.81pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MM Pro | 1.38″/px | 1.48 × 0.83° | 1.81pxpractical | fits12.78 of 43 mm |
| ZWO ASI6200MC Pro | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| ZWO ASI6200MM Pro | 1.80″/px | 4.77 × 3.18° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated |
| ZWO ASI990MM Pro | 2.39″/px | 0.85 × 0.68° | 1.05pxundersampled | fits8.20 of 43 mm |
| ZWO ASI991MM Pro | 2.39″/px | 0.44 × 0.34° | 1.05pxundersampled | fits4.19 of 43 mm |
No sensor size in the catalogue, so no figures: Canon EF body + T-ring, Canon EF-S body + T-ring, Canon RF body + T-ring, Fujifilm X body + T-ring, L-mount (Leica / Panasonic / Sigma) body + T-ring, Micro Four Thirds body + T-ring, Nikon F body + T-ring, Nikon Z body + T-ring, Pentax K body + T-ring, QHY268C, QHY268M, QHY533C, QHY533M, Sony E / FE body + T-ring, ToupTek SkyEye24AC, ToupTek SkyEye62AC, ToupTek SkyEye62AM.
Last updated Computed from the catalogue when the site is builtEvery telescope