The Bubble Galaxy
10-Aug-2021
NGC 3521 is a flocculent spiral galaxy located 26 million light-years away from Earth
Image:
- 72x 300s Luminance
- 16x 300s Red
- 15x 300s Green
- 17x 300s Blue
Total integration 10 hours. Focal length: 1960mm
Hardware:
- Celestron 11" EdgeHD
- Celestron 0.7x EdgeHD focal reducer
- Skywatcher EQ8-Rh Pro mount
- QSI 683-ws8 Camera @ -15°C
- Astrodon LRGB Gen2 E-Series Tru-Balance filters
- Starlight Xpress Lodestar X2 Autoguider
- Innovations Foresight ONAG
- Starlight Instruments Feather Touch Focuser
Location:
- Exposed over 4 nights between 24th March to 10th April 2021
- Orange zone in Brisbane, Australia. (Bortle 7)
Software:
- Planning & camera alignment with Aladin 10
- Captured with TheSkyX Professional
- Guiding with PHD2
- PixInsight: Calibrate, align, integrate, dynamic background extraction, LRGB combination, noise reduction, photometric color calibration, HDR multiscale transform, histogram, curves, crop.