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[vsnet-chart 406] (fwd) Re: GK Per 118 S COMP
- Date: Tue, 12 Mar 2002 12:55:48 +0900 (JST)
- To: vsnet-campaign-gkper@ooruri.kusastro.kyoto-u.ac.jp, vsnet-chart@ooruri.kusastro.kyoto-u.ac.jp, vsnet-sequence@ooruri.kusastro.kyoto-u.ac.jp
- From: Taichi Kato <tkato@kusastro.kyoto-u.ac.jp>
- Subject: [vsnet-chart 406] (fwd) Re: GK Per 118 S COMP
- Cc: vsnet-chart-problem@ooruri.kusastro.kyoto-u.ac.jp
- Sender: owner-vsnet-chart@ooruri.kusastro.kyoto-u.ac.jp
(fwd) Re: GK Per 118 S COMP
From: aah@nofs.navy.mil
Date: Mon, 11 Mar 2002 20:24:06 -0700
Subject: [vsnet-chat 5233] Re: GK Per 118 S COMP
It is simple for someone with photometric filters, even
on a nonphotometric night, to measure this comp star since
there is a very good existing dataset at
http://ftp.nofs.navy.mil/pub/outgoing/aah/sequence/gkper.dat
All you do is include some of the stars from gkper.dat in
your frame to set the zeropoint, and then determine the
brightness of the unknown star.
In fact, just to clear up the issue, I measured the 'offending'
comp star this evening. Results:
RA (J2000) DEC V B-V
03:31:11.57 +43:43:37.3 11.443 0.313
Estimated errors are about 0.01mag. This is of course a
single night measure and does not guard against variability.
Arne
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