Dátum: 1999. május 3., 22:40
Feladó: Kiss László --
Tárgy: SN99by
Az alabbi a legujabb AAVSO Alert Notice-ben szarmazik:
0915+51 SUPERNOVA 1999by IN NGC 2841
We have been informed by the Central Bureau for Astronomical Telegrams
(IAU Circular 7156) of the independent discovery by R. Arbour, South
Wonston, Hampshire, England, and by the Lick Observatory Supernova Search
(LOSS) of an apparent supernova in NGC 2841. M. Papenkova, W. D. Li, and
A. V. Filippenko, University of California at Berkeley, report on behalf
of the LOSS team that the supernova was found on unfiltered CCD images
obtained on April 30.2 and May 1.2 UT at magnitude approximately 15.7 and
15.0, respectively, using the 0.8-m Katzman Automatic Imaging Telescope
(KAIT). Arbour reports that his unfiltered CCD image obtained April
30.8749 using a 0.3-m f/6.3 Schmidt- Cassegrain reflector showed the
supernova at magnitude 15.1.
According to a position forwarded by Arbour (IAU Circular 7156) and
obtained by M. Armstrong, Rolvenden, England, on an image taken Apr.
30.904 UT, the supernova is located at
R.A. = 09h 21m 52.07s Dec. = +51 degrees 00' 06.6" (2000).
A pre-discovery image obtained by Arbour on April 28.8786 UT showed the
supernova at CCD magnitude 16.0-16.5. Patrol images taken by Arbour on
April 10, 14, 22, 23, and 27 showed no new object down to CCD magnitude
17.5. A KAIT image of the field taken April 25.2 UT showed nothing at the
position of the supernova down to CCD magnitude 19.3 (IAU Circular 7156).
An additional observation was reported to the AAVSO on May 1 by Erno
Berko, Ludanyhalaszi, Hungary, who found the supernova to be magnitude
approximately 15.5 - 16 on an unfiltered CCD image he obtained on April
30.837 UT using a 4-inch f/6 APO-refractor.
30.837 UT using a 4-inch f/6 APO-refractor.
Azt hiszem, nyugodtan gratulalhatunk az Ernonek!
Lathatoan nem a tavcsovon (10 cm!) mulik a dolog,
hanem az emberanyag kerdesen...
Udv,
Kiss Laszlo