Rigs ED doublet refractors
William Optics Zenithstar 61 II
Every camera in the catalogue on this telescope, at 360 mm and f/5.9, with the William Optics FLAT 61A (1.0x). 42 pairings have a page; 11 sensors are larger than the stated image circle and listed without one.
The telescope
Aperture61mm
Focal length360mmnative
Focal ratiof/5.9
Image circle43mmwith the William Optics FLAT 61A (1.0x)
OTA weight2.20kgneeds 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 | 2.15″/px | 1.80 × 1.80° | 1.16pxundersampled | fits15.99 of 43 mm |
| Player One Poseidon-C Pro | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| Player One Poseidon-M Pro | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| Player One Uranus-C | 1.66″/px | 1.78 × 1.00° | 1.50pxpractical | fits12.85 of 43 mm |
| QHY294M Pro | 2.65″/px | 3.07 × 2.06° | 0.94pxundersampled | fits23.23 of 43 mm |
| QHY600M (SBFL front section) | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| QHY600M (standard, with CAA) | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ToupTek ATR183C | 1.38″/px | 2.08 × 1.39° | 1.82pxpractical | fits15.73 of 43 mm |
| ToupTek ATR183M | 1.38″/px | 2.08 × 1.39° | 1.82pxpractical | fits15.73 of 43 mm |
| ToupTek ATR2110C | 6.88″/px | 3.69 × 2.32° | 0.36pxbadly undersampled | fits27.41 of 43 mm |
| ToupTek ATR2600C | 2.15″/px | 3.72 × 2.50° | 1.16pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR2600M | 2.15″/px | 3.72 × 2.50° | 1.16pxundersampled | fits28.18 of 43 mm |
| ToupTek ATR294C | 2.65″/px | 3.04 × 2.07° | 0.94pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR294M | 2.65″/px | 3.04 × 2.07° | 0.94pxundersampled | fits23.10 of 43 mm |
| ToupTek ATR3CMOS07100KMA | 2.58″/px | 2.29 × 1.58° | 0.97pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR3CMOS07100KPA | 2.58″/px | 2.29 × 1.58° | 0.97pxundersampled | fits17.47 of 43 mm |
| ToupTek ATR432C | 5.16″/px | 2.29 × 1.58° | 0.48pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR432M | 5.16″/px | 2.29 × 1.58° | 0.48pxbadly undersampled | fits17.47 of 43 mm |
| ToupTek ATR533C | 2.15″/px | 1.80 × 1.80° | 1.16pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR533M | 2.15″/px | 1.80 × 1.80° | 1.16pxundersampled | fits15.97 of 43 mm |
| ToupTek ATR585C | 1.66″/px | 1.78 × 1.00° | 1.50pxpractical | fits12.85 of 43 mm |
| ToupTek ATR585M | 1.66″/px | 1.78 × 1.00° | 1.50pxpractical | fits12.85 of 43 mm |
| ToupTek SkyEye24AC-plus | 3.40″/px | 5.73 × 3.82° | 0.73pxbadly undersampled | sensor larger than the stated image circle43.28 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ToupTek SkyEye26AC-plus | 2.15″/px | 3.72 × 2.50° | 1.16pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye26AM-plus | 2.15″/px | 3.72 × 2.50° | 1.16pxundersampled | fits28.18 of 43 mm |
| ToupTek SkyEye45AC-plus | 2.52″/px | 5.73 × 3.82° | 0.99pxundersampled | sensor larger than the stated image circle43.32 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ToupTek SkyEye62AC-plus | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ToupTek SkyEye62AM-plus | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.24 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI071MC Pro | 2.74″/px | 3.75 × 2.48° | 0.91pxundersampled | fits28.29 of 43 mm |
| ZWO ASI1600MM Pro | 2.18″/px | 2.80 × 2.12° | 1.15pxundersampled | fits22.06 of 43 mm |
| ZWO ASI183MC Pro | 1.38″/px | 2.10 × 1.40° | 1.82pxpractical | fits15.86 of 43 mm |
| ZWO ASI183MM Pro | 1.38″/px | 2.10 × 1.40° | 1.82pxpractical | fits15.86 of 43 mm |
| ZWO ASI2400MC Pro | 3.40″/px | 5.72 × 3.82° | 0.73pxbadly undersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI2600MC Air | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC DUO | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MC Pro | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Air | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM DUO | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI2600MM Pro | 2.15″/px | 3.74 × 2.50° | 1.16pxundersampled | fits28.26 of 43 mm |
| ZWO ASI294MC Pro | 2.65″/px | 3.06 × 2.07° | 0.94pxundersampled | fits23.19 of 43 mm |
| ZWO ASI294MM Pro | 2.65″/px | 3.06 × 2.07° | 0.94pxundersampled | fits23.19 of 43 mm |
| ZWO ASI4400MC Pro | 2.52″/px | 5.72 × 3.82° | 0.99pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI461MM Pro | 2.15″/px | 6.97 × 5.23° | 1.16pxundersampled | sensor larger than the stated image circle54.82 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI533MC Pro | 2.15″/px | 1.80 × 1.80° | 1.16pxundersampled | fits15.99 of 43 mm |
| ZWO ASI533MM Pro | 2.15″/px | 1.80 × 1.80° | 1.16pxundersampled | fits15.99 of 43 mm |
| ZWO ASI585MC Air | 1.66″/px | 1.78 × 1.00° | 1.50pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MC Pro | 1.66″/px | 1.77 × 1.00° | 1.50pxpractical | fits12.78 of 43 mm |
| ZWO ASI585MM Air | 1.66″/px | 1.78 × 1.00° | 1.50pxpractical | fits12.85 of 43 mm |
| ZWO ASI585MM Pro | 1.66″/px | 1.77 × 1.00° | 1.50pxpractical | fits12.78 of 43 mm |
| ZWO ASI6200MC Pro | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI6200MM Pro | 2.15″/px | 5.72 × 3.82° | 1.16pxundersampled | sensor larger than the stated image circle43.27 mm diagonal, 43 mm stated with the William Optics FLAT 61A (1.0x) |
| ZWO ASI990MM Pro | 2.86″/px | 1.02 × 0.81° | 0.87pxundersampled | fits8.20 of 43 mm |
| ZWO ASI991MM Pro | 2.86″/px | 0.52 × 0.41° | 0.87pxundersampled | 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