Elephant Trunk Nebula.
If you are tired of looking at narrow band images of Elephant Trunk nebula, here is a closeup using RGB filters. I think it looks pretty cool.
Details at:
https://peternagy.smugmug.com/Telescope ... -j7bctvt/A
IC1396: Elephant Trunk Nebula. RGB + pseudo-Luminance. 0.96"/pixel image scale.
Astrodon Red filter, 17 x 7 minutes
Astrodon Green filter, 16 x 7 minutes
Astrodon Blue filter, 17 x 7 minutes
TEC 140 APO F/7 with Astro-Physics A-P1100GTO GEM. QSI660wsg. OAG and Ultrastar autoguider, Optec Handy Stepper Motor focuser.
Captured and automated with SGP. Calibration (including Dark Subtraction) and Post-processed with PixInsight. PHD2 settings: RA Aggressiveness: 60, RA Hysteresis: 10, Max RA/Dec Duration: 2000, Min Move: 0.45, Calibration Steps: 350msec, Auto/Resist Switching, Extreme dithering and Settled at < 1.0, 3 sec guiding exposure.
