Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008atel.1475....1t&link_type=abstract
The Astronomer's Telegram, #1475
Astronomy and Astrophysics
Astronomy
29
Optical, Binaries, Cataclysmic Variables, Novae, Stars
Scientific paper
We report on optical spectral observations and UBVRI brightness estimations obtained with 60/90 cm Schmidt and 60 cm Cassegrain telescopes of the Nicolaus Copernicus University Observatory (Torun, Poland). The nova V2491 Cyg was discovered on Apr. 10.728 UT with about 7.7 mag on unfiltered CCD frames (IAUC#8934). Additionally, the X-ray emission was detected for the prenova several months ago (ATel#1473).
Mikolajewski Maciej
Ragan E.
Swierczynski E.
Tomov Toma
Wychudzki P.
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