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I have posted two pictures of Jupiter at Astrobin: https://www.astrobin.com/4agtir/final/rawthumb/qhd/?sync https://www.astrobin.com/06zkra/final/rawthumb/qhd/?sync I believe this is near the top I can get with at 280mm scope. Considering the focal length to be 5000mm then the Dawes resolving power shall be 120/280=0.428 arcsec A pair of stars separated by this distance shall have a separation of 5000*.428/206265=0.01mm=10um so basically to satisfy the Shannon rule the best size for my pixels shall be 5um but better stay a little lower (double sampling is really the bare minimum) so about 4um. The pixel size on my camera is 2.9um, so the green has a sampling period of 4.1um which is good, but the red and the blue have sampling period of 5.8um due to the RGGB bayer configuration. I would want to ask expert users if they can see there is undersampling in my images. Thank you. Kind regards, Gianluca |
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I'm not sure that wasn't said in jest but I don't think there is any chance of undersampling in those images. Great images BTYW. Complimenti! Incidentally, @ 5 mt of focal length with pixel of 2.9um the sampling is ~0.12"/px, which is plenty go even in deep blue (480 nm). |
