← Back to the gallery
FROM THE OBSERVATORY · 02-Nov-2018

Grand Spiral Galaxy NGC7424

Open original image ↗
Grand Spiral Galaxy NGC7424
NGC7424 is a large barred spiral galaxy with well defined arms, similar to the Milky Way. It is around 38 million light years away.
BEHIND THE IMAGE

Notes from the session

Image:
49x 300s red
44x 300s green
48x 300s blue
70x 600s luminance


Total integration 11 hours 40 minutes.

Hardware:
Celestron 11" EdgeHD
Celestron EdgeHD 0.7x focal reducer
Skywatcher EQ8 Pro mount
QSI 683-ws8 Camera @ -15°C
Astronomik UHC, deep sky RGB filters
Starlight Xpress Lodestar X2 Autoguider
Starlight Xpress Active Optics
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II



Location:
Imaged on 6 nights between September 9 and September 18, 2018.
Orange zone in Brisbane, Australia. (Bortle 7)



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, color calibration, reduce noise, LRGB combination, histogram stretch, HDR multiscale transform, curves.