Barred Double Ring Spiral Galaxy NGC 1398
30-May-2022
NGC 1398 is a barred spiral galaxy with double ring structure 65 million light years distant.
The ring near the center is likely an expanding density wave of star formation, caused either by a gravitational encounter with another galaxy, or by the galaxy's own gravitational asymmetries. (Source: NASA)
Image:
- 94x 300s Luminance
- 23x 300s Red
- 24x 300s Green
- 23x 300s Blue
Total integration 13 hours 40 minutes. Focal length: 2800mm
Hardware:
- Celestron 11" EdgeHD
- Skywatcher EQ8 Pro mount
- QSI 683-ws8 Camera @ -15°C
- Astrodon RGB Gen2 E-Series Tru-Balance filters
- Astronomik CLS-CCD light pollution filter
- Starlight Xpress Lodestar X2 Autoguider
- Starlight Xpress Large Format Active Optics
- Innovations Foresight ONAG
- Starlight Instruments Feather Touch Focuser
Location:
- Exposed over 5 nights between 10th November to 17th November 2020
- 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, dymanic background extraction, LRGB combination, noise reduction, photometric color calibration, HDR multiscale transform, histogram, curves, crop.