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THE ASTRONOMER Electronic Circular No 1572      2000 Oct 17 11.12UT
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             GMH at AST.STAR.RL.AC.UK
WORLD WIDE WEB                    http://www.demon.co.uk/astronomer
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SUPERNOVA 2000dt IN UGC 3411 (Q2000/289)
On the morning of 2000 Oct 14 just prior to the editor's departure
to the BAA VSS meeting in Northampton, a message was received from
Mark Armstrong of a possible supernova in UGC 3411 initially
recorded at 01.24UT on the morning of Oct 13 with a follow-up
image the next night. Appeals were e-mailed to the checking team
for confirmation and Dan Green at CBAT advised of our
investigation. On Oct 16 during the day an e-mail was received
from Weidong Li detailing an independent discovery enabling CBAT
to issue the following circular:

Guy M. Hurst, Basingstoke, England, reports the discovery by Mark
Armstrong, Rolvenden, of an apparent supernova (mag 17.5) on
unfiltered CCD images (limiting mag 19.5) taken with a 0.35-m
Schmidt-Cassegrain telescope in the course of the U.K. Nova/
Supernova Patrol on Oct. 13.058, 13.914, and 14.019 UT.  SN 2000dt
is located at R.A. = 6h10m54s.68, Decl. = +62o01'27".2 (2000),
which is 2" west and 16" north of the centre of UGC 3411.
The new object appears neither on a CCD image taken by Armstrong on
Sept. 21 (limiting mag 19.5), nor on the following Palomar Sky
Survey images:  1990 Jan. 1 (red, limiting mag 20.8); 1993 Oct. 12
and Dec. 6 (blue, limiting mag 22.5); and 1996 Oct. 16 and Dec. 2
(red, limiting mag 20.8).

Y. Sato and W. D. Li, University of California at Berkeley, on
behalf of the Lick Observatory Supernova Search, report their
independent discovery of SN 2000dt with the 0.8-m Katzman Automatic
Imaging Telescope (KAIT) on unfiltered images taken on Oct. 14.4
(mag about 17.8) and 15.4 UT (mag about 17.9), providing position
end figures 54s.68, 27".4 (or 1".3 west and 15".0 north of the
nucleus of UGC 3411).
IAUC 7508 (extract)

Congratulations to Mark on this further success!: editor


SUPERNOVA 2000ds IN NGC 2768
T. Puckett and G. Dowdle, Mountain Town, GA, report the discovery
of an apparent supernova (mag 17.9) on an unfiltered CCD frame
(limiting mag 19.9) taken with the Puckett Observatory 0.60-m
automated supernova patrol telescope on Oct. 10.40 UT.  SN 2000ds
is located at R.A. = 9h11m36s.24, Decl. = +60o01'42".2 (2000),
which is 9".1 west and 32".1 south of the centre of NGC 2768.  The
new object was also present on an unfiltered CCD frame taken on
Oct. 11.38, and it appeared at mag 18.1 on a frame taken on Oct.
12.34.  SN 2000ds does not appear on unfiltered images taken by
Puckett during 2000 Jan. 6-May 28, and it does not appear on
Palomar Sky Survey images taken on 1996 Mar. 17 (limiting mag
about 21.0) and on 1995 Feb. 5 (limiting mag about 21.0).
IAUC 7507

Guy M Hurst