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FROM THE OBSERVATORY · 07-Jul-2019

The Butterfly Cluster

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The Butterfly Cluster
The Butterfly Cluster, Messier 6, is an open cluster of hot blue stars with the brightest member being an orange giant star. Behind the cluster is the orange light of the Milky Way, and a beautiful cloud of excited Hydrogen alpha gas.
BEHIND THE IMAGE

Notes from the session

Image:
38x 180s Red
35x 180s Green
33x 180s Blue
31x 300s 6nm Hα


Total integration 7 hours, 53 minutes.

Hardware:
Skywatcher Black Diamond 80ED
Skywatcher EQ8 Pro mount
QSI 683-ws8 Camera @ -15°C
Astronomik 6nm Hα, deep sky RGB filters
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II



Location:
Imaged on 2 nights: 31st May and 4th June 2019.
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, deconvolution, NBCombinator, histogram stretch, curves.