Reddit Processing Challenge for Q4 2013
M33 - LRGB Ha data by /u/PixInsightFTW
http://www.reddit.com/r/astrophotography/comments/1on0hu/processing_challenge_q4_2013_challenge_m33_in/Processed in PixInsight
1) Crop to 3500x2333 for framing and vingetting
2) DBE each frame (20px radius, 20x20 samples, .5 tolerance, subtraction)
3) LRGB combine R, G, and B @ .82, .97, 1.0, .5 lightness, .5 saturation, no NR
4) Histogram Stretch RGB midtones to about 1/3, then blackpoint to barely clipping
5) ACNDR RGB - Lightness mask, 1.5 Lum, 2.0 Chrom
6) Histogram Stretch RGB midtones so all three channels align, then blackpoint on K to barely clipping
7) Histogram Stretch Ha to about 1/3
8) ACNDR on Ha - Lightness mask, 1.5 Lum, no Chrom
9) Histogram stretch Ha, blackpoint barely clipping, peak at 1/16
10) Histogram stretch L to about 1/3
11) ACNDR L - Lightness mask, 1.5 Lum, no Chrom
12) Histogram Stretch on L - blackpoint to clipping about 500px
13) HDRMultiscale on L, 7 layers
14) Clone L
15) Histrogram stretch Cloned L to blacking the background and slightly bring up the galaxy
16) Mask L with Cloned L
17) Curves on L, K down for background, K up for galaxy
18) LRGB Combine L with RGB, 1.0 on all channels, saturation at .3, no NR
19) Mask LRGB with L
20) Curves LRGB, K and S down on background, K and S up on galaxy, repeat to please
21) Mask LRGB with Ha
22) Curves LRGB, R and S up on galaxy (brings up the HA)
23) Final unmasked curve to finish
Comments