NGC 3199
13-Feb-2016
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.
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.