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FROM THE OBSERVATORY · 23-Sep-2018

Planetary Nebula IC5148

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Planetary Nebula IC5148
A glowing shell of ionized gas ejected from a dying star, IC5148 is at the end of its life, shedding its outer layers and contracting from a red giant to a white dwarf.
BEHIND THE IMAGE

Notes from the session

Image:
39x 600s luminance
16x 300s red
22x 300s green
18x 300s blue


Total integration 11 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:
Imaged over 2 nights, 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, light deconvolution, reduce noise, LRGB combination, background neutralization, SCNR green, histogram stretch, curves.