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THE ASTRONOMER Electronic Circular No 2276      2006 Nov 01 14.29UT
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
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TAGO'S VARIABLE IN CASSIOPEIA (=GSC 3656.1328)
Akihiko Tago, Japan, has reported a brightening object on 30-s CCD
frames taken with a 70-mm f/3.2 lens and a Canon EOS 20Da digital camera 
(limiting magnitude 12).

The object is located at:
RA 00h 09m 21.81s, DEC+54 39' 43.8" (2000)

Magnitudes: 2006 Oct.25.54UT, 10.7; 27.41, 10.5; 30.41, 8.8; 31.47, 7.5.

Tago adds that a star of mag 11.8 is located very close to the new 
variable's position and is GSC 3656.1328. The USNO-A2 lists this at red 
magnitude 11.3.

K. Kadota obtained a precise position using a 0.25-m f/5 reflector on 
2006 Oct 31.75: RA 00h 09m 22.04s DEC +54d 39'43.8" (2000).

Mike Collins, Everton, Bedfordshire, England and surveying for the UK 
Nova/Supernova Patrol, advises that he has confirmed the brightening and 
that GSC 3656.1328 and the suspect are one and the same.

On digital patrol image pairs of 3 min exposure using Canon 10D camera 
with FL 85 mm f/1.8 lens taken of Patrol Area 19 the star was of the 
following magnitudes:

2006 Sep 22.925 UT  (mean of frames D69-20,21), mag 11.7
2006 Oct.21.863 UT  (mean of frames D70-8,9),   mag 10.9

These values fit well with a gradual rise as reported by Tago.

Further magnitude estimates:
2006 Oct 31.984UT, 8.7 (Guy M Hurst, 15x80B, Basingstoke)
2006 Nov 01.176UT, 8.7 (Gary Poyner, 10x50B, Birmingham)

Guy M Hurst