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BIN1 Vs BIN2 resolution in ASI 2600MM

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#1 caliguliminix

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Posted 25 November 2021 - 01:44 AM

A few nights ago I decided to image with my LRGB filters on an ASI 2600MM camera. I used BIN1 for L and BIN2 for RGB for the light subs. However, when I was taking the flats, I accidentally shot everything in BIN1. I thought this should be no problem since I could simply down sample my BIN1 image into BIN2 image and be done with it (along with the FITS keywords). However, to my surprise, I found that the resolution of a BIN1 image is 6248 x 4176 while a BIN2 image is 3120 x 2088. This is 4 pixels smaller in the first dimension (6248 / 2 = 3124) than expected from simply dividing BIN1 by 2. Does anyone know where I should be removing these 4 pixels from a BIN1 image down sampled to BIN2?



#2 radix655

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Posted 03 December 2021 - 08:19 PM

You cannot do that. bin1 flats cannot be used for bin2 lights and vice-versa, so does darks




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