This is part 1 in my first PixInsight Tutorial series of videos. In this video I will take you through the steps of pre-processing and image calibration using dark frames, dark flat frames, flat frames to calibrate your light frames. I will show you how to make a master dark from your dark frames, how to make master dark flats for each filter, how to calibrate your flats for each filter and how to use your master flats and your master dark to calibrate your light frames for each filter. In the tutorial I will use a ASI294MM Pro camera and Ha, O-III and S-II filters, but the principles will apply to other scenarios. I will show you the manual steps for the entire calibration in PixInsight.