Quote:
Originally Posted by ASTROMONK
Please can someone explain to me how to achieve a black background colour in a single shot colour image? I use Nebulosity camera control (SX M26C ) and can save the image as a single Maxim FITS frame or separate R G B FITS (Maxim).  |
Hi David,
Your question is quite broad - there are many things that can cause background levels. Some are easy to deal with (a constant level) while others are much harder to deal with (vignetting, light pollution and/or gradients). They all require different techniques to get rid of them.
Perhaps you could attach an example of the unwanted signal?