Comet C/2015 ER61 Motion
10-Apr-2017
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.
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