Note the interesting hexagonal ring around NGC 6771. Elliptical galaxy IC 4842 is shown in the bottom-left of the frame.
Better resolution:
https://observatory.site/astrophotog...C6770_NGC6771/
Annotated:
https://imgur.com/a/UdGjh3q
Image:
- 102x 300s luminance
- 33x 300s red
- 31x 300s green
- 28x 300s blue
Total integration 16 hours 10 minutes.
Hardware:
- Celestron 11" EdgeHD
- Skywatcher EQ8 Pro mount
- QSI 683-ws8 Camera @ -15°C
- Astronomik luminance, deep sky RGB filters
- Starlight Xpress Lodestar X2 Autoguider
- Starlight Xpress Active Optics
- Innovations Foresight On Axis Guider
- Starlight Instruments Focus Boss II
Location:
- Orange zone in Brisbane, Australia. (Bortle 7)
- Imaged over 3 nights. New Moon.
Software:
- Planning & camera alignment with Aladin 10
- Captured with TheSkyX Professional
- Guiding with PHD2
- FocusLock live focusing
- PixInsight: calibrate, align, stack, crop, dynamic background extraction, light deconvolution, noise reduction, stretch, curves.