Hello! I made 20-30 frames series with my ASI1600MM Pro on different deep sky objects like IC1848, NGC896, 300-360-420 sesc shots with bin 1x1, and after processing only stars are visible on the final picture. The histogram is just a very thin line, no dust, no gas clouds, no informations, only stars are visible on my deep space target pictures. The lights - I checked - do have good information but along the calibration with darks, BIAS-s, and flats somehow almost all the information has been wiped out from the result picture. If I processed the lights only with flats, but without darks and BIAS-s, I get normal picture (certainly it is visible the lack of kalibration frames, what I ignored). What I realised, that the ADU on the darks and BIAS-s are even higher than on the lights. The gain I used on the camera were gain0 and 10 offset, and 139 gain and 21 offset. Both gave the same result. Can anyone explain, what wiped out the information from my lights?