Using hyperstar on the C8 with LRGB filters , I managed to capture the area around M86 in very heavy light pollution (this was from West San Jose, CA).
I had 130 frames, 70 x 15 sec L, 20 x 15 sec RGB
I tried many solutions for tackling the light pollution gradient with many not working.
Here was an intermediate step after doing a basic stretch:
Pixinsight's ABE/DBE left the image in far worse shape than it started.
I tried this method for removing light pollution using levels and the eyedropper https://www.skyandte...n-astro-images/ but it didn't evenly remove it because of the strong central glow.
I therefore tried this method: http://www.ericteske...-from-star.html which uses a gaussian blur and does a subtraction and it did relatively better
Some additional cropping resulted this:
This is the astrobin link where you can see a larger resolution: https://www.astrobin.com/352546/
Comments or other suggestions for tackling such strong light pollution welcome.
Also, why was my original image so tilted towards the red? The filters were from Optolong and are LRGB.
Edited by joelin, 23 June 2018 - 02:17 AM.