m_abukhalid
Well-known member
Hello everyone,
I updated my raw settings recently based on an online recommendation to check the highlighted options below
When reviewing some flats I was scratching my head as to a big disconnect between the values reported by pixsinight's image statistics process and what I was seeing in SGP Pro. It then dawned on me that the change in my raw file settings might be the culprit. Sure enough, using a 4 second flat as an example If I open the file with the settings active I get the values on the left (grossly underexposed flat), while if I disable settings prior to opening the file I get the values on the right (overexposed).
I tried this for a 2 second exposure which gives me a max of 10k ADU and appears to be the limit where the response is linear from my camera sensor but with the appropriate raw settings on it reads as 1800 max ADU.
I initially thought those options would just ignore pixels that are either 0 or 1 but that is what the Unclipped option does in image statistics and it does not have the same effect. Can someone help me make sense out of this? Trying to make sure I have the right raw settings and the right exposure lengths as I have little success flat calibrating images properly.
I updated my raw settings recently based on an online recommendation to check the highlighted options below
When reviewing some flats I was scratching my head as to a big disconnect between the values reported by pixsinight's image statistics process and what I was seeing in SGP Pro. It then dawned on me that the change in my raw file settings might be the culprit. Sure enough, using a 4 second flat as an example If I open the file with the settings active I get the values on the left (grossly underexposed flat), while if I disable settings prior to opening the file I get the values on the right (overexposed).
I tried this for a 2 second exposure which gives me a max of 10k ADU and appears to be the limit where the response is linear from my camera sensor but with the appropriate raw settings on it reads as 1800 max ADU.
I initially thought those options would just ignore pixels that are either 0 or 1 but that is what the Unclipped option does in image statistics and it does not have the same effect. Can someone help me make sense out of this? Trying to make sure I have the right raw settings and the right exposure lengths as I have little success flat calibrating images properly.