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Alert Notice 139: Nova Herculis 1991 AND Outburst of 2325+43 DX Andromedae

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

                        AAVSO ALERT NOTICE 139 (March 29, 1991)

NOVA HERCULIS 1991

This bright nova is fading rather fast as indicated by the following observations:

Mar 26.367 UT 7.5 (J. Bortle)
26.404  7.7 (J. Bortle)
26.81  7.6 (R. H. McNaught)
27.79  8.1 (R. H. McNaught)
28.5  8.0 (R. Royer)
29.5  8.3 (R. Royer) - the nova appeared quite red

Accompanying is an AAVSO chart prepared by C. E. Scovil. Please monitor this nova
as closely as you can using the few photoelectric comparison star magnitudes and
the letter sequences indicated on the new chart. We are in the process of
preparing another finder chart with fainter comparison star magnitudes.

The answering machine at Headquarters (617-354-0484) is kept on nights and
weekends. Please call in your observations so we can relay them to the Central
Bureau For Astronomical Telegrams.

OUTBURST OF 2325+43 DX ANDROMEDAE

Patrick Schmeer (Bischmisheim, Germany) informed us that the dwarf nova 2325+43
DX Andromedae is undergoing an outburst as indicated by his observations of March
28.169 UT, magnitude 11.8. This cataclysmic variable had a short outburst in May
1990 and a long bright one in November 1989 as the accompanying light curve shows.
The present outburst may be another bright one. Please monitor it as much as
you can.

Many thanks for your efforts and astronomical contributions! 

Clear Skies! Good Observing!

Janet A. Mattei
Director

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