2 Observations

The spectra presented here were obtained during two observing runs. The first spectroscopic observations of IP Peg were performed on July 13, 1993 using a 1000-channel television scanner mounted on the SP-124 spectrograph at the Nasmyth-1 focus of the 6-m telescope of the Special Astrophysical Observatory. A total of 40 spectra were taken in the wavelength range 3600-5500 Å with a dispersion of 1.9 Å channel^-1. The weather conditions were not very favorable, with a seeing of around 3 arcsec. Individual exposure times were 300 s, and the intervals between them did not exceed 30 s. The total duration of the observations was 3.8 hours. Note that we observed IP Peg in its quiescent state. We reduced these spectroscopic data by using the procedure described by Knyazev (1994).

A second dataset was obtained during an observing campaign in August 06-09 1994 at the 3.5-m telescope at the German-Spanish Astronomical Center, Calar Alto, Spain. From the trailed spectra, which were phase-folded into 100 phase bins and which have a spectral resolution of 1.3 Å, we extracted the H$\alpha$, H$\beta$ and H$\gamma$ lines. Due to technical difficulties we could only obtain 50% phase coverage of H$\alpha$. Data acquisition and reduction methods used are described in detail by Wolf et al. (1998).