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The Rosette Nebula
ST-10XME on AP155 F7
Astrodon HaRGB Filter set
7 x 20 minutes H-Alpha on AP900GTO - CLICK ON THE IMAGE TO SEE THE
H-ALPHA CHANNEL
7 x 5 minute Red, 8 x 5 min Green and Blue
Flesherton, Ontario, Canada
Feb 23/24, 2008
Ambient temp -8C; camera temp -25C; Moon three days past full
Images captured, darks and flats applied in CCDSoft5
Aligned, debloomed and sigma-reject combined in Maxim
Levels, HighPassFilter in Photoshop CS2
H-Alpha blended into RGB in 100/7/20 percent using Lighten Mode