Say I have 2 images of the same nebula target, same gear, one taken with a broadband red filter, the other narrowband Ha. The stars and continuum objects are brighter in the R filter, but the nebulosity S/N ratio of the Ha is better.
I'm trying to figure out how to:
- match the star brighness in each image, so the stars look the same but nebulosity is stronger in the Ha one
- match the nebulosity brightness in each, with the dimmer stars being in the Ha one
Any ideas? Could just eye-ball it with histro-trans, but figure there's a more mathmatical/scientific way with PI as there usually is.
I'm getting back to working through http://pixinsight.com/tutorials/narrowband/theory/en.html
and in there, the nebulosity is same brightness but Ha has weaker stars.