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FROM THE OBSERVATORY · 17-Aug-2017

Nebula Sh2-37

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Nebula Sh2-37
Sh2-37 is a hydrogen emission nebula with two small blue reflection nebulae, embedded in a dusty background against the core of the Milky Way.
BEHIND THE IMAGE

Notes from the session

Image:
60x 600s Luminance bin1x1
35x 300s Red bin2x2
20x 300s Green bin2x2
24x 300s Blue bin2x2


Total exposure 16 hours 35 minutes.

Hardware:
Skywatcher Black Diamond ED80
SkyWatcher EQ8 Pro Mount
QSI 683-ws8 Camera @ -15°C
Astronomik Typ2 LRGB filters
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II



Location:
Orange zone in Brisbane, Australia. (Bortle 7)
Imaged over 5 nights, 50% moon.



Software:
Planning & camera alignment with Aladin 9
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
FocusLock live focusing
CCDInspector: Image analysis & rejection
CCDStack 2+: Calibrate, align, stack, deconvolution, remove gradients, combine RGB.
Photoshop CC: Shadows/highlights, combine L+RGB, curves, adjust colour balance, saturation, crop.