High Resolution: Bubble Nebula in HST . Click on the image to zoom.
There seems to be so many ways to process in HST. My previous process removed all green and eventually I felt it didn't look right. So I preserve some green which came from Ha to make more colorful look.
Any comments or critiques welcome. Thanks for looking.
NGC7635: Bubble Nebula Hubble Palette in Cassiopeia. 0.47"/pixel. 8/24/2012, 9/7/2012, 10/6/2012.
Astrodon Ha 5nm filter: 21 x 15 minutes, 1x1, Excellent seeing condition. 8/24/2012
Astrodon Oiii 5nm filter: 31 x 15 minutes, 1x1, Not so good seeing condition. 9/7/2012
Astrodon Sii 5nm filter: 12 x 30 minutes, 1x1, Excellent seeing condition. 10/6/2012
Celestron 8" EdgeHD at F/10 with A-P Mach1GTO GEM. Atik 460EX mono. Hutech OAG. Lodestar.
Captured and pre-processed with Nebulosity. Stacked and post processed with PixInsight.
PHD settings: RA Aggressiveness: 60, RA Hysteresis: 10, Max Dec Duration: 75, Min Motion: 0.70, Calibration Steps: 125msec, Auto/Resist Switching, Extreme dithering and Settled at < 0.5, 3 - 4 sec guiding exposure.
Red = Sii, Green = Ha, Blue = Oiii