Deep Impact visible!

by Michael Linnolt

I had a successful observation of the impact just a short time ago! I did not see a flash within 2min of the predicted time. But, shortly after it I noticed the nucleus become more distinct, DC increased, and the m1 then increased about 0.5 mag over 30 mins. I used the 10.43, 11.04, 11.27 comps by Tycho2+Bessell. Here are my observations:

9P/Tempel 1 2005 Jul 04.2368 UT: m1=11.2, Dia=2.2', DC=4
9P/Tempel 1 2005 Jul 04.2451 UT: m1=11.2, Dia=2.2', DC=4
9P/Tempel 1 2005 Jul 04.2500 UT: m1=11.1, Dia=2.2', DC=6
9P/Tempel 1 2005 Jul 04.2583 UT: m1=10.9, Dia=2.2', DC=7
9P/Tempel 1 2005 Jul 04.2674 UT: m1=10.7, Dia=2.2', DC=8

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Posted on sf-bay-tac Jul 04, 2005 00:58:46 PT
Converted by report.pm 1.2 Sep 25, 2005 18:28:57 PT