Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003ycat..34030637c&link_type=abstract
VizieR On-line Data Catalog: J/A+A/403/637. Originally published in: 2003A&A...403..637C
Astronomy and Astrophysics
Astronomy
Binaries: Eclipsing, Photometry: Ubv, Photometry: Cousins
Scientific paper
The object we studied were observed with a Wright Instruments 1024x1024 CCD camera mounted on the 80 cm "IAC80" telescope at Observatorio del Teide in Tenerife, Spain, operated by Instituto de Astrofisica de Canarias using Johnson-Cousins V and RC filters. Typical integration times were 20s for V and 10s for RC bands respectively. 2x2-pixel binning was used to obtain an optimal sampling of the star profiles of FWHM nearly equal to 3 pixels, and only a subframe of size 3x7 arcminutes, containing DW UMa and the two comparison candidates GSC 3822-1056 (which is actually a W UMa-type variable and our study is on this star) and GSC 3822-0070. In this way the time between frames was shortened to 5 seconds.
(3 data files).
Biro Imre Barna
Borkovits Tamás
Csizmadia Sz.
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