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Alert Notice 148: Nova Scuti 1991 AND Request to monitor dwarf novae for IUE observing runs

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THE AMERICAN ASSOCIATION OF VARIABLE STAR OBSERVERS
25 Birch Street, Cambridge, NIA 02138 USA
BITNET: aavso@cfa8 SPAN: nssdca::cfa8::aavso
Tel. 617-354-0484 FAX 617-354-0665

AAVSO ALERT NOTICE 148 (September 3,1991)

NOVA SCUTI 1991

The Central Bureau for Astronomical Telegrams and Frank Bateson, Director of the
Variable Star Section of the Royal Astronomical Society of New Zealand, inform
us that RASNZ member Paul Camilleri, Cobram, Victoria, Australia, has
photographically discovered a nova in Scutum on August 30.468 UT at photographic
magnitude 10.3, visual magnitude 10.5. R. H. McNaught, Anglo-Australian Observatory,
reports the precise position (1950.0) of the nova as measured on an Uppsala Southern
Schmidt plate taken August 31.54 to be:

   RA = 18h 44m 26.58s  Dec. = -08deg 24' 12.0"

Paul reports that on Aug. 8.604 UT the nova was photographic magnitude < 12, and
on Aug. 31.38 visual magnitude 10.5. D. A J. Seargent, The Entrance, New South
Wales, also obtained visual magnitude 10.5 around the same time. R. H. McNaught
reports that no star appears in the position of the nova on the first Palomar Sky
Survey Blue or Red plates. The pre-nova was recorded on UK Schmidt plates on
September 6, 1980, at magnitude(R) - 20; May 3, 1981, at magnitude(J) - 21; and
August 23, 1984, at magnitude(R) - 20: (IAU Circular 5332)

Please use the accompanying AAVSO charts prepared by Charles Scovil to observe the
nova, and report your observations to AAVSO Headquarters.

Our congratulations to Paul Camilleri on his third discovery this year!

REQUEST TO MONITOR DWARF NOVAE FOR IUE OBSERVING RUNS

Astronomers in the Netherlands have requested our assistance in monitoring dwarf
novae for their upcoming IUE observing run on dwarf novae in outburst, scheduled
for September 16-17, 1991. Please call in your observations of dwarf novae in
outburst September 13, 14, 15, and 16 so we may update the astronomers before and
during their observing run.

The Headquarters answering machine (617-354-0484) is on nights and weekends for
your convenience.

Many thanks for your observing efforts and your valuable astronomical contributions.

Good observing!

Janet A. Mattei
Director

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