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herrbdog t1_iu5hxtd wrote

well then the files would be smaller... only 18 bits per pixel? well that's not that much actually (only 262,144 possible color values), but is probably sufficient for the data acquired. idk, i'm not an astronomer :(

so 6 channels, but only 3 bits per channel?


rocketsocks t1_iu5js7y wrote

Every exposure is 18 bits per pixel, each channel is a separate exposure. So a full image of one patch of the sky would be either 5 or 6 individual exposures for each color channel (plus a clear exposure) which would be equivalent to 90 or 108 bits per pixel.

There isn't a 1:1 match of filter channels to RGB colors but for just the 3 color channels closest to RGB that would be the equivalent of 54 bits per pixel, or 18 quadrillion colors.


herrbdog t1_iu5n0l0 wrote

GOT IT, thanks!!! (yeah i realise it doesn't convert directly to RGB then)

intense detail then.