(cba:news) [cvnet-outburst] ALERT: IL Vul extremely rare outburst (fwd)

Joe Patterson jop at astro.columbia.edu
Thu Jul 7 06:31:01 EDT 2005

Dear CBAers,

Well this looked awfully interesting to me - IL Vul - in my waning few
minutes of email access.  Probably a good northern target!


---------- Forwarded message ----------
Date: Sun, 3 Jul 2005 21:49:58 +0200 (CEST)
From: Patrick Schmeer <pasc1312-aavso at yahoo.de>
Reply-To: cvnet-outburst at yahoogroups.com
To: cvnet-outburst at yahoogroups.com
Cc: baavss-alert at yahoogroups.com
Subject: [cvnet-outburst] ALERT: IL Vul extremely rare outburst

Unfiltered CCD observations by P. Schmeer, Bischmisheim, Germany:
VULIL 20050616.414 <175CR SPK
VULIL 20050703.388  155CR SPK
Instrument: University of Iowa, Rigel Telescope (0.37-m Cassegrain)
Sequence: USNO-A2.0 catalogue (R magnitudes)

Only one certain (1964) and two rather certain outbursts
(1930, 1955) of this dwarf nova were observed before:
1930 Aug. 20, mag 15.5
1955 Sep. 22, mag 15
1964 Aug. 14.98 UT, mag 15 (JD 2438622.48, not 242...)
(C. Hoffmeister, IBVS 80)

On the outburst image I measured the following position:
R.A. 20h38m32.72s  Decl. +22o42'16.7"  (J2000.0)

Time-series photometry is very urgently required (perhaps
also spectroscopy).


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