Untitled Document

NGC7331
Stephen's Quintet

Click Image for Larger Version

APM/TMB115 @ f/5.4 Riccardi .75x Reducer SBIG STF-8300M 
Astrodon LRGB Filters Losmandy G11-Gemini 2

L=19x10min 
R=19x10min 
G=18x10min 
B=20x10min 
Total  = 12hrs 40min Images calibrated with darks and flats and stacked in DeepSkyStacker Master LRGB channels aligned in Registar Final processing in Photoshop CS3: Curves/levels stretching, smartsharpen filter, reduce noise filter, high pass filter

2011 
AT8RC, Atik 383L+, TV TRF-2008 Reducer, Losmandy G11 guided with Orion SSAG/EON 80mm APO 
L=40x10min 
R=14x10min 
G=17x10min 
B=18x10min 
Lights, Darks, Bias and Flats calibrated and stacked in DeepSkyStacker Master channels aligned in Nebulosity 
Photoshop: Levels/curves adjustments, smartsharpen filter, high pass filter, reduce noise filter, GradientXTerminator, Shadows/Highlights adjustment, Color Ratios LRGB combination method as described by Paul Kanevsky Carboni Actions: Make Stars Smaller