← Back to the gallery
FROM THE OBSERVATORY · 03-Aug-2018

Colliding Galaxies NGC6769 NGC6770 NGC6771

Open original image ↗
Colliding Galaxies NGC6769 NGC6770 NGC6771
A galactic merger is happening 165 million light years away between the spiral galaxies NGC 6769, 6770, 6771.
BEHIND THE IMAGE

Notes from the session

Also of note is the interesting hexagonal ring around NGC 6771. Elliptical galaxy IC 4842 is shown in the bottom-left of the frame. There are many other background galaxies in the deep sky image, some of which are shown below.



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.