Благодая помощи Кирилла Соколовского, удалось наконец получить текст CBET 1626 с нашем подтверждении открытия сверхновой в красивой спиральной галактике:
SUPERNOVA 2008ij IN NGC 6643
S. Nakano, Sumoto, Japan, reports the discovery by Koichi Itagaki
(Teppo-cho, Yamagata, Japan, 60-cm f/5.7 reflector) of an apparent
supernova (mag 15.9) on ten or more 15-s unfiltered CCD frames (limiting
mag 19.0) taken around Dec. 19.45 UT. Confirming images by Itagaki on
Dec. 19.806 and 20.347 yields magnitudes 15.8 and 15.7, respectively.
The new object is located at R.A. = 18h19m51s.81 +/- 0s.11, Decl. =
+74o33'54".9 +/- 0".2 (equinox 2000.0; average of three images measured
by Itagaki), which is about 23" east and 11" south of the center of
NGC 6643. Nothing is visible at this position on his past frames taken
before 2007 Feb. 25 (limiting magnitude 19.5) or on his most recent
survey image from 2008 Dec. 16 limiting magnitude 19.0), and nothing is
visible on the Digitized Sky Survey (limiting mag 20.5). Nakano adds
that K. Kadota (Ageo, Japan, 0.25-m reflector) confirmed 2008ij at mag
16.0 and position end figures 51s.80, 55".2 (offset 21" east and 11"
south of the galaxy's center. Following posting on the Central Bureau's
unconfirmed-objects webpage, T. Kryachko, Kazan State University (KSU);
and S. Korotkiy, Moscow, report 2008ij at mag V = 15.4 with position end
figures 51s.88, 54".7 (offset 22" east, 11".5 south of the center of
the galaxy NGC 6643) on a 300-s CCD exposure (limiting red mag 20.0) taken
on Dec. 19.722 with a 30-cm Takahashi FRC-300 telescope (+ Apogee Alta
U9000 camera) at KSU's Astrotel Observatory at Karachay-Cherkessia, Russia,
adding that nothing is visible at this position on a Palomar Sky Survey
plate obtained on 1993 July 23 (limiting red mag 20.5; via the Digitized Sky
Survey); they have posted an image showing the galaxy and 2008ij at the
following website URL:
http://www.astroalert.su/files/ngc6643sn.jpg.
Note that SN 2008bo appeared in this galaxy (CBETs 1324, 1325).
NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
superseded by text appearing later in the printed IAU Circulars.
2008 December 20 (CBET 1626) Daniel W. E. Green
