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Date: Sun, 23 Feb 2003 21:02:22 +0100 From: Arkadiusz Olech <olech@astrouw.edu.pl> Subject: KS UMa by Ostrowik team Dear Friends, Thanks to the excellent weather conditions, during the last night (Feb 22/23) we obtained 11.6 hours of observations of KS UMa. This night the weather is excellent too, and we started our run at 17:10 UT. >From Feb 21/22 to Feb 22/23 the brightness of KS UMa decreased about 0.1 mag. Additionally during Feb 22/23 run the star faded by another 0.1 mag. Also the amplitude of the superhumps decreased to about 0.2 mag at the end of the night. The mean period of superhumps derived from our two nights of observations is 0.0699 +\- 0.0002 days. Ostrowik team: Arkadiusz Olech Piot Kedzierski Krzysztof Mularczyk Kamil Zloczewski Mariusz Wisniewski
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