Mon, 04/29/2024 - 21:05
I noticed that when you do a intgerresample in Pixinsight say 4x downsample to reduce the size of the files, pixinsight will create a new pixel size at 4 times the original size but it leaves the binning alone. I assume this is correct since I haven't seen any issues on the pixinsight forum. But I was wondering whether Vphot used pixel size or binning when it processes an image?
PI is doing it right.
I've seen confusion between physical pixel size and effective size which changes with binning.
VPhot does not deal with images at this level except in the instance of demosaicing a color image: In that case the pixel size is doubled as the resulting image is reduced by half in both dimensions.
George