I have more questions about using a color camera ( ASI071). To obtain good color one needs to bloat over 4 pixels. I did some math to determine what focal length and aperture size is needed when the image size is 4 pixels. Example: If the FWHM is 4 pixels or 4 * 4.78 = 19.12 um and the seeing is 2” then the required focal length is ( star size * 206.265 ) / seeing = (19.12 * 206.265)/2 = 1971 mm. That would give me a pixel scale of ( 206.265 * 4.78 )/1971 = 0.5 arc-sec / pixel. Then the resolution requirement of the telescope would be the same. Then the aperture size would be 116/0.5 = 232 mm. The size limit of my objects in the sky would be 27 arc-minutes in keeping a bloat over 4 pixels. What do I do to image larger objects and bloat enough pixel to get good color? Is this a limitation of a color camera? Thanks, ASTROM
