van Cauteren, P. ; Lampens, P. ; Wils, P.

published in Peremennye Zvezdy, 26 (2006)

Abstract: The contact binary RZ UMi was discovered by Goranskij (1982), who also attributed it to the W UMa class with a period of 0.33735283 days. No other observations of this star have been published since. We therefore re-observed RZ UMi at Beersel Hills Observatory on nine nights between May 2001 and March 2003. The instrument used was a 0.4 m Newtonian telescope, equipped first with a SBIG ST7E CCD camera (2001-2002) and later with a ST10 XME camera (2003). The 2001 observations are unfiltered. From 2002 onwards, a V filter according to the specifications of Bessell (1995) was used. The exposure times varied between 120 and 180 seconds. All images were reduced with the aperture photometry procedure of the Mira AP software package and darkframed and flatfielded according to standard procedures.

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