[vsnet-alert 8524] IL Vul extremely rare outburst
Patrick Schmeer
pasc1312-aavso at yahoo.de
Mon Jul 4 04:46:35 JST 2005
Unfiltered CCD observations by P. Schmeer, Bischmisheim, Germany:
VULIL 20050616.414 <175CR Scp
VULIL 20050703.388 155CR Scp
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).
Regards,
Patrick
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