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[vsnet-chat 602] (fwd from ISN) Re[2]: SN/NGC772
- Date: Wed, 10 Sep 1997 12:21:41 +0900 (JST)
- To: vsnet-chat
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsnet-chat 602] (fwd from ISN) Re[2]: SN/NGC772
- Sender: owner-vsnet-chat@kusastro.kyoto-u.ac.jp
Mail formarded from the ISN list, with permission of the contributor.
Date: Mon, 08 Sep 97 09:02:08 PST
From: "Wayne P. Johnson" <wpjohnson@anet.bna.boeing.com>
To: JRSanf@aol.com, eviews@ix.netcom.com (Robert W Ross)
Cc: bmarsden@cfa.harvard.edu, isn@mbox.queen.it, guy@tahq.demon.co.uk
Subject: Re[2]: SN/NGC772
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All,
Indeed some excitement this weekend, but unfortunately two false
alarms! Our apologies to all who helped and empathy to Bob Ross for
what sure looked like a good candidate. Giuseppe and I had a chance to
image the field the following night and saw that our "SN suspect" (=
asteroid 1887) was no longer there. We were puzzled, though, on our
original image where asteroid 5240 was. There was a very close double
star in our image that was not obvious on Vickers' image. Usually his
images are pretty crisp. Our second image resolved that problem and
showed that after blinking the two images, the motion of 5240 was
obvious, but it did take a day. An hour or two was not sufficient to
detect motion; another wrinkle in this SN hunting business: an
asteroid that doesn't move! Unfortunately most amateurs are only able
to be out observing one night at a time, thus making day to day
comparisons difficult at best.
Thanks to the ISN we are beginning to get some coordinated efforts to
follow up on suspicious objects. Keep up the careful work to everyone
involved. We had a great couple of weekends observing and I had a
chance to increase my reference library of images.
Sincerely,
Wayne (aka Mr. Galaxy) Johnson
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp