Tapio Pursimo edited UNid.tex  about 10 years ago

Commit id: e8ab6bf0a06621afb9cdf0398e9c599d58582674

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Background:\\  there is a star 2.8" W from the tgt R about 19.9mag\\  Historical data:\\  GSC2.3 FJVN 17.22 JFVN  18.65 17.22  17.96 16.40 (1993.379?) B(POSS-I) 19.27\\ USNO A2 BR 18.6 17.7 1951.528\\  USNO B1 B1,B2,R1,R2,I 18.90, 18.45, 18.17, 17.15, 16.00 \\  NOMAD BV 18.35, 17.97 YB6 catalogue, unpublished)\\  Historical data suggest some variability e.g. B: 18.65, 18.6, 18.90, 18.45, 18.25 and 19.27  R: 17.22, 17.7 18.17, 17.15, 17.97 but nothing dramatic, especially taking into account the   measuremnt errors 0.3-0.4 mag.  Our own data from 07-2013 and 03-2014 show again some variability $\Delta R \sim$ 0.3 mag.  \textbf{Photometry}\\  2013-07-18T21:54 R 90 ALwg180095\\  R=17.47 (quick look assuming R=F)\\