Following the posting on the Central Bureau's unconfirmed-objects webpage about a possible nova in Ophiucus, today we performed some follow-up of this object remotely through a 0.25-m, f/3.4 reflector + CCD, near Mayhill (NM).
We can confirm the presence of a relatively bright counterpart at coordinates:
R.A. = 17h39m50s.95, Decl. = -23o 50'00".9 (equinox 2000.0; UCAC-2 catalogue reference stars).
Our multicolor photometry provides the following values: 2008, May. 26.31, B= +11.42, V= +10.45, R= +9.81 (estimated accuracy +/- 0.05 magnitudes in each color).
Our image of this transient is available at the following Url:
http://tinyurl.com/64bw3x
Comparison with a UK Schmidt Telescope red plate, obtained on 1991, August 11 show nothing in this position (limiting magnitude near 20).
by E. Guido and G. Sostero (Remanzacco Observatory, Italy)
Monday, May 26, 2008
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