ASTROPIXELSEATONS HILL OBSERVATORY
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FROM THE OBSERVATORY · 10-Apr-2017

Comet C/2015 ER61 Motion

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Comet C/2015 ER61 Motion
Comets move fast. So fast that you cannot use stars to guide your telescope. With an on-axis guider I was able to lock the telescope on to the fuzzy comet. This animation shows how fast the comet moves over a 30 minute period.
BEHIND THE IMAGE

Notes from the session

Image:
9x60s Green + 10 flat + 50x dark + 120x bias



Total exposure 9 minutes over a 30 minute period.

Hardware:

Skywatcher Black Diamond ED80
SkyWatcher EQ8 Pro Mount
QSI 683-ws Camera @ -15°C
Astronomik typ 2c Green filter
Starlight Xpress Lodestar X2 Autoguider
Innovations Foresight On Axis Guider
Starlight Instruments Focus Boss II



Location:
Orange zone in Brisbane, Australia. (Bortle 7)



Software:
Captured with AstroArt 6
Guiding with PHD2 + PHD_Dither
CCDStack 2+: Calibrate, stack
Photoshop CC: Animation