ASTROPIXELSEATONS HILL OBSERVATORY
← Back to the gallery
FROM THE OBSERVATORY · 13-Feb-2016

NGC 3199

Open original image ↗
NGC 3199
NGC 3199 is a hydrogen emission nebula, about 12,000 light-years away. The nebula is about 75 light-years across with a Wolf-Rayet star generating an intense stellar wind in the center of its ring.
BEHIND THE IMAGE

Notes from the session

Image:

5x 900s Ha bin2x2 + 12x flat + 50x dark + 120x bias
13x 750s Ha bin2x2 + 30x flat + 50x dark + 120x bias
15x 420s Lum bin2x2 + 30x flat + 50x dark + 120x bias
6x 180s red bin3x3 + 42x flat + 50x dark + 120x bias
4x 180s green bin3x3 + 42x flat + 50x dark + 120x bias
20x 180s blue bin3x3 + 42x flat + 50x dark + 120x bias

Total exposure time: 6 hours 15 minutes.

Hardware:

Celestron EdgeHD 1100 with CGEM DX mount
Celestron 0.7x EdgeHD focal reducer
QSI 683-wsg Camera @ -15°C
Astronomik Type 2c LRGB filters
Astronomik Ha 6nm filter
Orion StarShoot Autoguider
Starlight Xpress Adaptive Optics


Location:

Orange zone in Brisbane, Australia. (Bortle 7)


Software:

Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
Aladin 8.0: Planning & camera alignment.
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, normalize, stack, curves, combine RGB.
Photoshop CC: Integrate L+Ha+RGB / Ha+RGB, reduce noise, high pass filter, shadows/highlights, unsharp mask, shrink stars, color balance.