Barred Spiral Galaxy NGC5921
13-Jun-2018
The barred grand spiral galaxy NGC 5921 lies 65 million light years away. It was discovered by William Herschel on 1 May 1786. There are several background galaxies present in the image.
Image:
- 63x 450s Red
- 16x 450s Red
- 16x 450s Green
- 18x 450s Blue
Total integration 14 hours 8 minutes.
Hardware:
- Celestron 11" Edge HD
- Skywatcher EQ8 Pro mount
- QSI 683-ws8 Camera @ -15°C
- Astronomik Typ2c Luminance, Deep Sky RGB filters
- Starlight Xpress Active Optics
- Starlight Xpress Lodestar X2 Autoguider
- Innovations Foresight On Axis Guider
- Starlight Instruments Focus Boss II
Location:
- Orange zone in Brisbane, Australia. (Bortle 7)
- Imaged over 6 nights, new moon.
Software:
- Planning & camera alignment with Aladin 9
- Captured with AstroArt 6
- Guiding with PHD2 + PHD_Dither
- FocusLock live focusing
- CCDInspector: Image analysis & rejection
- CCDStack 2+: Calibrate, align, stack.
- PixInsight: Dynamic background extraction, noise reduction, deconvolution, combine LRGB, color calibration, background neutralization, HDR multiscale transform, curves, local historgram equalization, non-linear stretch