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Re: Comet C/2015 V2 Johnson

Posted: Fri May 05, 2017 7:19 am
by rwilkinson
Last night I went out to try my "vintage" 20 year-old CCD camera (a StarlightXpress MX516) with a little focal-reducer which I'd got recently from the Astroboot.
With the bright moonlight I hadn't planned to do any serious imaging, but the sky was clearer than I'd expected, so I decided to have a look for Comet Johnson. But as I'd not rigged up my BlueTooth interface, I had to manually enter its RA & Dec co-ordinates into my Celestron hand-control (under the User objects menu).
c2015v2_4may.png
Comet Johnson on 4-May. 32x 60-sec with MX516 on 70ED at f/3.3
c2015v2_4may.png (67.89 KiB) Viewed 1795 times

Re: Comet C/2015 V2 Johnson

Posted: Sat May 06, 2017 8:52 am
by rwilkinson
Another experiment: this time using my Atik 16IC one-shot colour camera on the back of my 70ED refractor:
johnson_5may.png
Comet Johnson on 5-May. 40x 60-sec with 16IC on 70ED at f/6
johnson_5may.png (172.68 KiB) Viewed 1786 times
I expect that the comet's tail is much longer than this, but the bright Moonlight made the fainter part impossible to detect.