(cba:news) Fwd: T Pyx observing campaign
jop at astro.columbia.edu
Fri Apr 15 08:02:21 EDT 2011
I'm battling a bad flu this week, which explains my silence re T Pyx.
But the season is not so bad, and since it has been a 45-year wait, this
will be likely be our only chance to study this fascinating star in
outburst. Jonathan, could you authorize Brad to use cba-news (and I
believe all recipients can use cba-chat). Brad can advise more
specifically... but some general wisdom re bright-star photometry is:
* use a V filter if you have one, and short exposures;
* consider using a soft focus (out of focus) image as this will combat
* trade notes re comparison-star selection (somebody's likely to
discover the best choice out there); my guess is that
multiple-comparison-star approach - which some of you use - is not a
wise choice at all.
I'm still not thinking - or typing! - all that well, so your own common
sense should trump what I've said. It's an exciting opportunity!
-------- Original Message --------
Subject: T Pyx observing campaign
Date: Thu, 14 Apr 2011 23:52:19 -0500
From: Brad Schaefer <bradschaefer at mac.com>
To: jop at astro.columbia.edu
With this wonderful opportunity, I would like to have a campaign to
observe T Pyx with fast photometry with extensive coverage. The idea
would be to repeat our extreme success with U Sco, where our 37,000
magnitudes covered the entire eruption with an average of one
magnitude every 2.6 minutes. So I propose to ask CBA people to help
by putting out an appeal on the CBA email exploder. But I think it
best to ask you for whether this use of your email exploder is OK.
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