Comet ISON (C/2012 S1) rising in the twilight

Posted by jm-astro
on Tuesday, October 22, 2013

This is a sketch of Comet C/2012 S1 (ISON) using a 20" f/5 Newtonian and a 13mm Ethos, as it appeared visually on Oct. 8, 2013, in the early morning before dawn. I used a red backlit tablet with tracing paper, to sketch the comet's appearance in Leo, and I was prepared to do a color sketch. The comet was very faint, so that I passed over it on the first search attempt. I could not detect any significant color visually, only a ghostly glow. There was the slightest hint of a streak above the comet toward the South. Also, one star appeared brighter than expected (relative to a star chart), GSC 1411:521. Observed visually for about 1/2 hour before twilight began.

To leave a comment you must be a member of our community.
Login to your account now, or register for an account to start participating.
No one has commented yet.
Join our Community!

Our community is FREE to join. To participate you must either login or register for an account.


Receive news, sky-event information, observing tips, and more from Astronomy's weekly email newsletter. View our Privacy Policy.

Find us on Facebook