What is a “calibrated image?
Explaining how to make a calibrated image is beyond the scope of this site. The images need to have had dark, flat, and bias frames applied so they are photometrically useful. This essentially reduces noise from the image due to sky brightness, instrumental signals which do not correspond to light, and heat in the camea. Your camera manual should explain how to do this. We have some evidence that it may not matter if our pictures are calibrated as our mathematical models used to determine magnitudes from brightness counts may compensate for this. 8. Should I shoot the target with IR blocked clear or non_IR blocked clear? I have both.
