Rigs ED doublet refractors
William Optics Zenithstar 73 III
Every camera in the catalogue on this telescope, at 430 mm and f/5.9, with the William Optics FLAT 73A (1.0x). 42 pairings have a page; 11 sensors are larger than the stated image circle and listed without one.
The telescope
Aperture73mm
Focal length430mmnative
Focal ratiof/5.9
Image circle43mmwith the William Optics FLAT 73A (1.0x)
OTA weight2.83kgneeds 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 | 1.51 × 1.51° | 1.39pxundersampled | fits15.99 of 43 mm |
| Player One Poseidon-C Pro | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| Player One Poseidon-M Pro | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| Player One Uranus-C | 1.39″/px | 1.49 × 0.84° | 1.80pxpractical | fits12.85 of 43 mm |
| QHY294M Pro | 2.22″/px | 2.57 × 1.73° | 1.13pxundersampled | fits23.23 of 43 mm |
| QHY600M (SBFL front section) | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| QHY600M (standard, with CAA) | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ToupTek ATR183C | 1.15″/px | 1.74 × 1.17° | 2.17pxpractical | fits15.73 of 43 mm |
| ToupTek ATR183M | 1.15″/px | 1.74 × 1.17° | 2.17pxpractical | fits15.73 of 43 mm |
| ToupTek ATR2110C | 5.76″/px | 3.09 × 1.95° | 0.43pxbadly undersampled | fits27.41 of 43 mm |
| ToupTek ATR2600C | 1.80″/px | 3.12 × 2.09° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR2600M | 1.80″/px | 3.12 × 2.09° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR294C | 2.22″/px | 2.54 × 1.73° | 1.13pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR294M | 2.22″/px | 2.54 × 1.73° | 1.13pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR3CMOS07100KMA | 2.16″/px | 1.92 × 1.32° | 1.16pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR3CMOS07100KPA | 2.16″/px | 1.92 × 1.32° | 1.16pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR432C | 4.32″/px | 1.92 × 1.32° | 0.58pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR432M | 4.32″/px | 1.92 × 1.32° | 0.58pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR533C | 1.80″/px | 1.51 × 1.50° | 1.39pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR533M | 1.80″/px | 1.51 × 1.50° | 1.39pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR585C | 1.39″/px | 1.49 × 0.84° | 1.80pxpractical | fits12.85 of 43 mm |
| ToupTek ATR585M | 1.39″/px | 1.49 × 0.84° | 1.80pxpractical | fits12.85 of 43 mm |
| ToupTek SkyEye24AC-plus | 2.85″/px | 4.80 × 3.20° | 0.88pxundersampled | sensor larger than the stated image circle43.28 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ToupTek SkyEye26AC-plus | 1.80″/px | 3.12 × 2.09° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye26AM-plus | 1.80″/px | 3.12 × 2.09° | 1.39pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye45AC-plus | 2.11″/px | 4.80 × 3.20° | 1.18pxundersampled | sensor larger than the stated image circle43.32 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ToupTek SkyEye62AC-plus | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ToupTek SkyEye62AM-plus | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI071MC Pro | 2.29″/px | 3.14 × 2.08° | 1.09pxundersampled | fits28.29 of 43 mm |
| ZWO ASI1600MM Pro | 1.82″/px | 2.34 × 1.77° | 1.37pxundersampled | fits22.06 of 43 mm |
| ZWO ASI183MC Pro | 1.15″/px | 1.76 × 1.17° | 2.17pxpractical | fits15.86 of 43 mm |
| ZWO ASI183MM Pro | 1.15″/px | 1.76 × 1.17° | 2.17pxpractical | fits15.86 of 43 mm |
| ZWO ASI2400MC Pro | 2.85″/px | 4.79 × 3.20° | 0.88pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI2600MC Air | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC DUO | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC Pro | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Air | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM DUO | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Pro | 1.80″/px | 3.13 × 2.09° | 1.39pxundersampled | fits28.26 of 43 mm |
| ZWO ASI294MC Pro | 2.22″/px | 2.56 × 1.73° | 1.13pxundersampled | fits23.19 of 43 mm |
| ZWO ASI294MM Pro | 2.22″/px | 2.56 × 1.73° | 1.13pxundersampled | fits23.19 of 43 mm |
| ZWO ASI4400MC Pro | 2.11″/px | 4.79 × 3.20° | 1.18pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI461MM Pro | 1.80″/px | 5.84 × 4.38° | 1.39pxundersampled | sensor larger than the stated image circle54.82 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI533MC Pro | 1.80″/px | 1.51 × 1.51° | 1.39pxundersampled | fits15.99 of 43 mm |
| ZWO ASI533MM Pro | 1.80″/px | 1.51 × 1.51° | 1.39pxundersampled | fits15.99 of 43 mm |
| ZWO ASI585MC Air | 1.39″/px | 1.49 × 0.84° | 1.80pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MC Pro | 1.39″/px | 1.48 × 0.83° | 1.80pxpractical | fits12.78 of 43 mm |
| ZWO ASI585MM Air | 1.39″/px | 1.49 × 0.84° | 1.80pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MM Pro | 1.39″/px | 1.48 × 0.83° | 1.80pxpractical | fits12.78 of 43 mm |
| ZWO ASI6200MC Pro | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI6200MM Pro | 1.80″/px | 4.79 × 3.20° | 1.39pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 73A (1.0x) |
| ZWO ASI990MM Pro | 2.40″/px | 0.85 × 0.68° | 1.04pxundersampled | fits8.20 of 43 mm |
| ZWO ASI991MM Pro | 2.40″/px | 0.44 × 0.35° | 1.04pxundersampled | 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