-------------------------------------------------------------------
THE ASTRONOMER Electronic Circular No 2438      2008 Apr 12 04.59UT
Ed:Guy M Hurst, 16,Westminster Close, Kempshott Rise,  Basingstoke,
Hants, RG22 4PP,England.Telephone/FAX(01256)471074Int:+441256471074
INTERNET: GUY@TAHQ.DEMON.CO.UK      Backup: gmh@wdcc1.bnsc.rl.ac.uk
WORLD WIDE WEB                         http://www.theastronomer.org
-------------------------------------------------------------------
V2491 CYGNI
Koichi Nishiyama, Japan and Fujio Kabashima, also of Japan report
discovery of a possible nova (mag 7.7) on two 20-s unfiltered CCD frames
(limiting mag about 12.5) taken on 2008 Apr.10.728 UT using a
105-mm-f.l. f/5.6 camera lens. A precise position has been obtained:
RA 19h 43m 01.96s DEC +32 19' 13.8" (2000)
On April 10.78UT the magnitude was 7.7 (unfiltered).
Nothing is visible at this position on their past survey frames taken on
Apr. 3.717 (limiting mag 12.5) and 7.727 (limiting mag 12.7).
Following an appeal from the Central Bureau on their website, J. Beize,
Beijing, China, reports the apparent independent discovery at mag
approximately 8.0 by Z.-w. Jin and X. Gao on several 60-s survey images
(limiting mag about 15.0) taken by Gao on Apr.10.831 with a Canon
EOS-350D camera (+ 7-cm-aperture, 200-mm-f.l.f/2.8 lens) at Xingming
Observatory, Mt. Nanshan, with Beize measuring position end figures
02s.00, 10".1 for the variable

Ernesto Guido and Giovanni Sostero, Remanzacco, Italy, report that their
confirming CCD images taken remotely with a 0.25-m reflector near
Mayhill, NM, U.S.A., on Apr. 11 show the apparent nova at position end
figures 01s.98, 13".5. They add that comparison with a Palomar Oschin
Schmidt telescope plate obtained on 1995 Aug. 3, shows the presence at
this position of an apparent star
with red mag about 18.

N. N. Samus, Institute of Astronomy, Moscow, advises that this
object is being assigned the variable-star designation V2491 Cyg.

Guy M Hurst



-- 
No virus found in this incoming message.
Checked by AVG.
Version: 7.5.519 / Virus Database: 269.22.12/1373 - Release Date: 4/11/2008 9:17 AM


-- 
Don Miles
For Women's Cricket on the Web : www.webbsoc.demon.co.uk
Last Updated 2008 April 7