I shoot for ~3/4 to the right of the histogram. I have gone down as low as 50% histogram. Because the stacking results in a 16-bit image file, the brightness can easily be adjusted in post processing.

Astroimager Adam Block has produced three image-processing tutorials on 4-gigabyte USB flash drives. Each includes between 100 and 161 minutes of instructional video as well as the raw data for ...

Image Processing Basics with NumPy Getting Started with Images in Python An image consists of a rectangular array of pixels where each one is assigned a colour. For example, here is an image with 9 ...