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AAVSO Special Notice #40

Possible Nova in Oph
(March 21, 2007)

As reported in CBET 900, Hideo Nishimura
(Miyawaki, Kakegawa, Shizuoka-ken) and Yuji Nakamura
(Kameyama, Mie, Japan) have discovered a possible
new nova around magnitude 10.  The position is
17:42:44.00  -23:40:35.1  J2000

Naito and Narusawa at Nishi-Harima Astronomical
Observatory obtained a low-resolution spectrogram that
indicates this is an Fe-II type nova, with typical
P-Cyg line profiles.

You can draw a chart of the region using the coordinates
above and VSP:
and we will add a visual sequence to that field
shortly.  This field will be put on the Sonoita
Research Observatory calibration list, to obtain
a BVRcIc calibration on the first clear night in
southern Arizona.  CCD observers should acquire
their images, but delay reporting your observations
until the calibration is available.

Arne Henden

AAVSO 49 Bay State Rd. Cambridge, MA 02138 617-354-0484