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FROM THE OBSERVATORY · 05-Jul-2016

Eagle Nebula

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Eagle Nebula
The Eagle Nebula is located 7000 light years away and is home to the famous "Pillars of Creation", shown in the centre of this image. This photograph is presented in the Hubble narrowband palette, which shows the distrubution of Hydrogen (green), Oxygen (blue), and Sulfur (red) gasses.
BEHIND THE IMAGE

Notes from the session

Image:
51x 600s 6nm H-alpha + 12 flat + 50x dark + 120x bias
49x 600s 12nm SII + 20 flat + 50x dark + 120x bias
38x 600s 12nm OIII + 20 flat + 50x dark + 120x bias



Total exposure 23 hours.

Hardware:

Celestron EdgeHD 1100
SkyWatcher EQ8 Pro Mount
Celestron 0.7x EdgeHD focal reducer
QSI 683-ws Camera @ -15°C
Astronomik 6nm Ha, 12nm SII, 12nm OIII filters
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Xpress Adaptive Optics
Starlight Instruments Focus Boss II



Location:
Orange zone in Brisbane, Australia. (Bortle 7)
Imaged over 5 nights.



Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusser
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution.
Photoshop CC: Reduce noise, high pass filter, shadows/highlights, levels, curves, combine SHO as RGB.