Gain and Offset settings

Hi all,

I have an ASI 1600 mm-pro with ZWO EFW.

From Venice usually I use my setup with narrowband filter at gain 139 and offset 50 settings.

Now I'd like to try LRGB imaging but, for light pollution, I need to do shorter exposures.

Yesterday I did new dark frames at 30-60-90-120" at gain 75 offest 50 but only now I have thought that probably the value of offset is wrong.

Could you help me?

What offset settings are right for 0-75-139 range of gain is better?

Thanks

Vittorio

We fix the offset value in ASCOM driver, for all gain the offset value is same.

if you would like to set it manually, take a look of this :

https://astronomy-imaging-camera.com/tutorials/cooled-asi-camera-setting-in-ascom-driver.html