FS 102 @ f/8; CS 10nm Ha, H9, SX AO @ .2 sec Ha 25x300s, Oiii 15x300s usual bortle white skies, seeing 2.5-4.5 arc sec--not bad for that elevation worse on the Oiii days 8/11-25/08, los alamitos, CA calibrated, combined, color balanced, saturation increase local adaptive filter, HP in maxim then to PS for final tweaking, crop, size reduction, etc. red is Ha, blue Oiii, green half Oiii + half Oiii*Ha (normalized) the Oiii seemed to add to the color contrast just below the bright center