Rigs Apochromatic refractors
ZWO FF90 APO
Every camera in the catalogue on this telescope, at 609 mm and f/6.8. 52 pairings have a page; 1 sensor is larger than the stated image circle and listed without one.
The telescope
Aperture90mm
Focal length609mmnative
Focal ratiof/6.8
Image circle44mmthe maker's figure
OTA weight3.92kgno corrector needed
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 | 1.27″/px | 1.06 × 1.06° | 1.96pxpractical | fits15.99 of 44 mm |
| Player One Poseidon-C Pro | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| Player One Poseidon-M Pro | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| Player One Uranus-C | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.85 of 44 mm |
| QHY294M Pro | 1.57″/px | 1.81 × 1.22° | 1.59pxpractical | fits23.23 of 44 mm |
| QHY600M (SBFL front section) | 1.27″/px | 3.39 × 2.26° | 1.96pxpractical | fits43.27 of 44 mm |
| QHY600M (standard, with CAA) | 1.27″/px | 3.39 × 2.26° | 1.96pxpractical | fits43.27 of 44 mm |
| ToupTek ATR183C | 0.81″/px | 1.23 × 0.82° | 3.08pxpractical | fits15.73 of 44 mm |
| ToupTek ATR183M | 0.81″/px | 1.23 × 0.82° | 3.08pxpractical | fits15.73 of 44 mm |
| ToupTek ATR2110C | 4.06″/px | 2.18 × 1.37° | 0.62pxbadly undersampled | fits27.41 of 44 mm |
| ToupTek ATR2600C | 1.27″/px | 2.20 × 1.48° | 1.96pxpractical | fits28.18 of 44 mm |
| ToupTek ATR2600M | 1.27″/px | 2.20 × 1.48° | 1.96pxpractical | fits28.18 of 44 mm |
| ToupTek ATR294C | 1.57″/px | 1.80 × 1.22° | 1.59pxpractical | fits23.10 of 44 mm |
| ToupTek ATR294M | 1.57″/px | 1.80 × 1.22° | 1.59pxpractical | fits23.10 of 44 mm |
| ToupTek ATR3CMOS07100KMA | 1.52″/px | 1.35 × 0.93° | 1.64pxpractical | fits17.47 of 44 mm |
| ToupTek ATR3CMOS07100KPA | 1.52″/px | 1.35 × 0.93° | 1.64pxpractical | fits17.47 of 44 mm |
| ToupTek ATR432C | 3.05″/px | 1.35 × 0.93° | 0.82pxundersampled | fits17.47 of 44 mm |
| ToupTek ATR432M | 3.05″/px | 1.35 × 0.93° | 0.82pxundersampled | fits17.47 of 44 mm |
| ToupTek ATR533C | 1.27″/px | 1.06 × 1.06° | 1.96pxpractical | fits15.97 of 44 mm |
| ToupTek ATR533M | 1.27″/px | 1.06 × 1.06° | 1.96pxpractical | fits15.97 of 44 mm |
| ToupTek ATR585C | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.85 of 44 mm |
| ToupTek ATR585M | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.85 of 44 mm |
| ToupTek SkyEye24AC-plus | 2.01″/px | 3.39 × 2.26° | 1.24pxundersampled | fits43.28 of 44 mm |
| ToupTek SkyEye26AC-plus | 1.27″/px | 2.20 × 1.48° | 1.96pxpractical | fits28.18 of 44 mm |
| ToupTek SkyEye26AM-plus | 1.27″/px | 2.20 × 1.48° | 1.96pxpractical | fits28.18 of 44 mm |
| ToupTek SkyEye45AC-plus | 1.49″/px | 3.39 × 2.26° | 1.68pxpractical | fits43.32 of 44 mm |
| ToupTek SkyEye62AC-plus | 1.27″/px | 3.38 × 2.26° | 1.96pxpractical | fits43.24 of 44 mm |
| ToupTek SkyEye62AM-plus | 1.27″/px | 3.38 × 2.26° | 1.96pxpractical | fits43.24 of 44 mm |
| ZWO ASI071MC Pro | 1.62″/px | 2.22 × 1.47° | 1.54pxpractical | fits28.29 of 44 mm |
| ZWO ASI1600MM Pro | 1.29″/px | 1.66 × 1.25° | 1.94pxpractical | fits22.06 of 44 mm |
| ZWO ASI183MC Pro | 0.81″/px | 1.24 × 0.83° | 3.08pxpractical | fits15.86 of 44 mm |
| ZWO ASI183MM Pro | 0.81″/px | 1.24 × 0.83° | 3.08pxpractical | fits15.86 of 44 mm |
| ZWO ASI2400MC Pro | 2.01″/px | 3.39 × 2.26° | 1.24pxundersampled | fits43.27 of 44 mm |
| ZWO ASI2600MC Air | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI2600MC DUO | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI2600MC Pro | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI2600MM Air | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI2600MM DUO | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI2600MM Pro | 1.27″/px | 2.21 × 1.48° | 1.96pxpractical | fits28.26 of 44 mm |
| ZWO ASI294MC Pro | 1.57″/px | 1.81 × 1.22° | 1.59pxpractical | fits23.19 of 44 mm |
| ZWO ASI294MM Pro | 1.57″/px | 1.81 × 1.22° | 1.59pxpractical | fits23.19 of 44 mm |
| ZWO ASI4400MC Pro | 1.49″/px | 3.39 × 2.26° | 1.68pxpractical | fits43.27 of 44 mm |
| ZWO ASI461MM Pro | 1.27″/px | 4.12 × 3.09° | 1.96pxpractical | sensor larger than the stated image circle54.82 mm diagonal, 44 mm stated |
| ZWO ASI533MC Pro | 1.27″/px | 1.06 × 1.06° | 1.96pxpractical | fits15.99 of 44 mm |
| ZWO ASI533MM Pro | 1.27″/px | 1.06 × 1.06° | 1.96pxpractical | fits15.99 of 44 mm |
| ZWO ASI585MC Air | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.85 of 44 mm |
| ZWO ASI585MC Pro | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.78 of 44 mm |
| ZWO ASI585MM Air | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.85 of 44 mm |
| ZWO ASI585MM Pro | 0.98″/px | 1.05 × 0.59° | 2.55pxpractical | fits12.78 of 44 mm |
| ZWO ASI6200MC Pro | 1.27″/px | 3.39 × 2.26° | 1.96pxpractical | fits43.27 of 44 mm |
| ZWO ASI6200MM Pro | 1.27″/px | 3.39 × 2.26° | 1.96pxpractical | fits43.27 of 44 mm |
| ZWO ASI990MM Pro | 1.69″/px | 0.60 × 0.48° | 1.48pxpractical | fits8.20 of 44 mm |
| ZWO ASI991MM Pro | 1.69″/px | 0.31 × 0.24° | 1.48pxpractical | fits4.19 of 44 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