Barred Spiral Galaxy NGC 1365
27-Nov-2015
NGC 1365 is a barred spiral galaxy 56 million light years away. Presented here is a hydrogen alpha enhanced color photograph.
Image:
- 24x 420s luminance bin2x2 + 20 flat + 37x dark + 120x bias
- 12x 180s red bin3x3 + 20 flat + 20x dark + 120x bias
- 12x 180s blue bin3x3 + 20 flat + 20x dark + 120x bias
- 12x 180s green bin3x3 + 20 flat + 20x dark + 120x bias
- 24x 600s Hα bin2x2 + 22 flat + 37x dark + 120x bias
Total exposure time: 8 hours 36 minutes.
Hardware:
- Celestron EdgeHD 1100 with CGEM DX mount
- QSI 683-wsg Camera @ -15°C
- Astronomik Type 2c LRGB & 6nm Hα filter
- Orion StarShoot Autoguider
- Starlight Xpress Adaptive Optics
Location:
- Orange zone in Brisbane, Australia. (Bortle 7)
- LRGB: Average seeing + 50% moon phase (waxing gibbous).
- Hα: Average seeing + full moon.
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.
- Astra Image 4.0: Deconvolution
- Photoshop CC: Reduce noise, shrink stars, high pass filter, shadows/highlights, integrate Hα+L+RGB, color balance, contrast.
Other items of interest:
Asteroid observed while blinking data:
2015 TG237