Rigs Petzval astrographs
Askar FRA500
Every camera in the catalogue on this telescope, at 500 mm and f/5.6. 53 pairings have a page; no catalogued sensor is larger than the stated image circle.
The telescope
Aperture90mm
Focal length500mmnative
Focal ratiof/5.6
Image circle55mmthe maker's figure
OTA weight4.10kgno 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 | 1.55″/px | 1.30 × 1.30° | 1.61pxpractical | fits15.99 of 55 mm |
| Player One Poseidon-C Pro | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| Player One Poseidon-M Pro | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| Player One Uranus-C | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.85 of 55 mm |
| QHY294M Pro | 1.91″/px | 2.21 × 1.48° | 1.31pxundersampled | fits23.23 of 55 mm |
| QHY600M (SBFL front section) | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.27 of 55 mm |
| QHY600M (standard, with CAA) | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.27 of 55 mm |
| ToupTek ATR183C | 0.99″/px | 1.50 × 1.00° | 2.53pxpractical | fits15.73 of 55 mm |
| ToupTek ATR183M | 0.99″/px | 1.50 × 1.00° | 2.53pxpractical | fits15.73 of 55 mm |
| ToupTek ATR2110C | 4.95″/px | 2.66 × 1.67° | 0.51pxbadly undersampled | fits27.41 of 55 mm |
| ToupTek ATR2600C | 1.55″/px | 2.68 × 1.80° | 1.61pxpractical | fits28.18 of 55 mm |
| ToupTek ATR2600M | 1.55″/px | 2.68 × 1.80° | 1.61pxpractical | fits28.18 of 55 mm |
| ToupTek ATR294C | 1.91″/px | 2.19 × 1.49° | 1.31pxundersampled | fits23.10 of 55 mm |
| ToupTek ATR294M | 1.91″/px | 2.19 × 1.49° | 1.31pxundersampled | fits23.10 of 55 mm |
| ToupTek ATR3CMOS07100KMA | 1.86″/px | 1.65 × 1.13° | 1.35pxundersampled | fits17.47 of 55 mm |
| ToupTek ATR3CMOS07100KPA | 1.86″/px | 1.65 × 1.13° | 1.35pxundersampled | fits17.47 of 55 mm |
| ToupTek ATR432C | 3.71″/px | 1.65 × 1.13° | 0.67pxbadly undersampled | fits17.47 of 55 mm |
| ToupTek ATR432M | 3.71″/px | 1.65 × 1.13° | 0.67pxbadly undersampled | fits17.47 of 55 mm |
| ToupTek ATR533C | 1.55″/px | 1.30 × 1.29° | 1.61pxpractical | fits15.97 of 55 mm |
| ToupTek ATR533M | 1.55″/px | 1.30 × 1.29° | 1.61pxpractical | fits15.97 of 55 mm |
| ToupTek ATR585C | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.85 of 55 mm |
| ToupTek ATR585M | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.85 of 55 mm |
| ToupTek SkyEye24AC-plus | 2.45″/px | 4.13 × 2.75° | 1.02pxundersampled | fits43.28 of 55 mm |
| ToupTek SkyEye26AC-plus | 1.55″/px | 2.68 × 1.80° | 1.61pxpractical | fits28.18 of 55 mm |
| ToupTek SkyEye26AM-plus | 1.55″/px | 2.68 × 1.80° | 1.61pxpractical | fits28.18 of 55 mm |
| ToupTek SkyEye45AC-plus | 1.82″/px | 4.13 × 2.75° | 1.38pxundersampled | fits43.32 of 55 mm |
| ToupTek SkyEye62AC-plus | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.24 of 55 mm |
| ToupTek SkyEye62AM-plus | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.24 of 55 mm |
| ZWO ASI071MC Pro | 1.97″/px | 2.70 × 1.79° | 1.27pxundersampled | fits28.29 of 55 mm |
| ZWO ASI1600MM Pro | 1.57″/px | 2.02 × 1.52° | 1.59pxpractical | fits22.06 of 55 mm |
| ZWO ASI183MC Pro | 0.99″/px | 1.51 × 1.01° | 2.53pxpractical | fits15.86 of 55 mm |
| ZWO ASI183MM Pro | 0.99″/px | 1.51 × 1.01° | 2.53pxpractical | fits15.86 of 55 mm |
| ZWO ASI2400MC Pro | 2.45″/px | 4.12 × 2.75° | 1.02pxundersampled | fits43.27 of 55 mm |
| ZWO ASI2600MC Air | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI2600MC DUO | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI2600MC Pro | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI2600MM Air | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI2600MM DUO | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI2600MM Pro | 1.55″/px | 2.69 × 1.80° | 1.61pxpractical | fits28.26 of 55 mm |
| ZWO ASI294MC Pro | 1.91″/px | 2.20 × 1.49° | 1.31pxundersampled | fits23.19 of 55 mm |
| ZWO ASI294MM Pro | 1.91″/px | 2.20 × 1.49° | 1.31pxundersampled | fits23.19 of 55 mm |
| ZWO ASI4400MC Pro | 1.82″/px | 4.12 × 2.75° | 1.38pxundersampled | fits43.27 of 55 mm |
| ZWO ASI461MM Pro | 1.55″/px | 5.02 × 3.77° | 1.61pxpractical | fits54.82 of 55 mm |
| ZWO ASI533MC Pro | 1.55″/px | 1.30 × 1.30° | 1.61pxpractical | fits15.99 of 55 mm |
| ZWO ASI533MM Pro | 1.55″/px | 1.30 × 1.30° | 1.61pxpractical | fits15.99 of 55 mm |
| ZWO ASI585MC Air | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.85 of 55 mm |
| ZWO ASI585MC Pro | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.78 of 55 mm |
| ZWO ASI585MM Air | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.85 of 55 mm |
| ZWO ASI585MM Pro | 1.20″/px | 1.28 × 0.72° | 2.09pxpractical | fits12.78 of 55 mm |
| ZWO ASI6200MC Pro | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.27 of 55 mm |
| ZWO ASI6200MM Pro | 1.55″/px | 4.12 × 2.75° | 1.61pxpractical | fits43.27 of 55 mm |
| ZWO ASI990MM Pro | 2.06″/px | 0.73 × 0.59° | 1.21pxundersampled | fits8.20 of 55 mm |
| ZWO ASI991MM Pro | 2.06″/px | 0.38 × 0.30° | 1.21pxundersampled | fits4.19 of 55 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