(cba:news) HS2331 on the warpath
jop at astro.columbia.edu
Wed Sep 5 08:52:15 EDT 2007
HS2331 brightened through the night, reaching 8.8 around 12:00 UT. I
know that Bob Koff obtained at least a few hours on it, but otherwise am
still unaware of what our coverage was. We had a night on a 2.4 m
telescope - and couldn't cope with the brightness. We might substitute
a dense filter, but most likely will leave this to CBA scopes. The
event is likely to last a month or more (or even much more), but will go
through stages with different characteristics. WZ Sge in 2001 was a
cornucopia of riches, but this one is likely to be even better, because
of all the odd periods the star presents.
We've been observing HS2331 heavily for two years, and in fact obtained
two nights of data the week before outburst... so we'll actually know
*phases* as well as periods just before outburst, and can compare with
Delete MN Dra and V1006 Cyg, by the way. I'll work up a full observing
list in the next day... but take advantage of this historic opportunity!
Bob and Donn, since you were fastest off the blocks, do you have any
comp star advice? We basically need good comp stars when bright, when
faint, and when intermediate. I'll work on this between crises today
(it's the start of school)... but any advice would be very welcome.
More information about the cba-public