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Date: Sat, 11 Oct 2003 11:49:00 -0400
From: "W.Liller" <wliller@compuserve.com>
Subject: Nova Cir
Hola everyone -
With a CCD + Schmidt camera + an objective transmission diffraction grating
(75 g/mm measuring 100 x 100 mm), I was able to image the red spectrum of
the nova candidate in Circinus at October 11.002 UT. It shows an
exceedingly strong and broad H-alpha emission line; its FWHM is at least
5100 km/s. (Part of the line may have been cut off by the red filter that
I used.) The brightness of its flat maximum was approximately 7.7 times
that of the surrounding continuum.
BVR photometry * at October 10.991 UT: V = 10.27 +/- 0.03; B-V = +0.39
+/- 0.05.
The R magnitude at October 11.037, assuming that V-R = 0.60 (B-V), was
8.48 +/- 0.07. It is clear that the strong H-alpha emission has caused
R to be unusually bright.
My position for the star is
R.A.= 15h 17m 52.20s +/- 0.14s, Decl. = -61o 57' 13.77" +/- 0.41"
from four stars with TYCHO coordinates.
All the best to all, Bill Liller
* Comparison stars: GSC 9021-1174; and
GSC 9025-1712, -1900, -1809, -474, -60, -789.
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