Tried it with one of my own stacked image this time…and here is what I got:
12:26:45: Existing plate solve (WCS information) will be resused for image
12:26:45: Findstar: processing for channel 0…
12:26:45: Findstar: processing for channel 2…
12:26:45: Findstar: processing for channel 1…
12:26:45: Image has a field of view of 1.41 degrees, using a limit magnitude of 13.63
12:26:46: The NOMAD catalog has been successfully downloaded.
12:26:46: Normalizing on red channel.
12:26:46: Photometry radii set to 14.8 for inner and 24.8 for outer
12:26:46: Applying aperture photometry to 283 stars.
12:26:47: 114 stars excluded from the calculation
12:26:47: Distribution of errors: 577 no error, 66 not in area, 30 inner radius too small, 1 invalid measurement error, 11 pixel out of range
12:26:47: Found a solution for color calibration using 169 stars. Factors:
12:26:47: K0: 1.000 (deviation: 0.030)
12:26:47: K1: 0.628 (deviation: 0.092)
12:26:47: K2: 0.551 (deviation: 0.155)
12:26:47: The photometric color correction seems to have found an imprecise solution, consider correcting the image gradient first
12:26:47: After renormalization, the following coefficients are applied
12:26:47: White balance factors:
12:26:47: K0: 1.201
12:26:47: K1: 0.754
12:26:47: K2: 0.661
12:26:47: Background reference:
12:26:47: B0: -1.31697e+04
12:26:47: B1: -8.06828e+03
12:26:47: B2: -7.00772e+03
Does this mean its applied to 169 stars? The comment “The photometric color correction seems to have found an imprecise solution, consider correcting the image gradient first” gives me a doubt as to what its done