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Astron. Astrophys. 326, 629-631 (1997)

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2. Imaging

We took three I -band images and one H [FORMULA] image of the field of V529 Ori on 1993 August 15 and 16 UT with the 1.0-m Jacobus Kapteyn Telescope at La Palma. All images were taken in in 1.3" seeing. An EEV CCD was used at the f/15 Cassegrain focus, which yielded a pixel scale of 0.31" pixel [FORMULA] A median of three bias frames was subtracted from each image, and the data were then flat-fielded using images of the twilight sky. We combined the I -band exposures into one image representing a total exposure of 1800 s. The H [FORMULA] image was a 1000-s exposure.

The resulting images are shown in Fig. 1. Star 5, using the numbers in the image of Fienberg (1995), was reported by this author to be the hibernating nova. Our images clearly show there are two components. Astrometry with the Guide Star Catalog (Russell et al. 1990) showed the 1950.0 positions, to within 0.4" absolute and 0.1" relative, of component A to be [FORMULA] 05 55 15.574  [FORMULA]  +20 15 55.88, and of component B to be [FORMULA] 05 55 15.638  [FORMULA]  +20 15 55.22.

[FIGURE] Fig. 1. Images in I and H [FORMULA] of the field of Nova Ori 1667. The stars are labeled with the numbers of Fienberg (1995). The visual binary in the center of the field is Candidate 5, the claimed hibernating nova.
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© European Southern Observatory (ESO) 1997

Online publication: October 15, 1997
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