JP Durman replied to the topic 'Problem with fits' in the forum. 8 years ago

I believe this is normal. A single sub is always quite dark.
For instance to check a single light in Nebulosity i have to debayer first to get the color and then have to stretch to check out the sub.

DSS will do this debayering proces during stacking thus adding the color.

So you can stretch the image to check out the sub (just like the option in Kstars) and see the real result after stacking.