[Aavso-photometry] Single Measurement vs. Time Series

[Richard 'Doc' Kinne]

Dear All,

     in January I made a short series, about 75 minutes in length, of  
images of Z AND.  Due to time constraints I reported a single  
observation to HQ with an error of 0.010 mags derived from the  
standard deviation of K-C from the first 4 measurements.  I revisited  
the series and did measurements on the series at 2 minute intervals,  
obtaining a std dev of K-C of 0.027 mags for 32 measurements.   
Initially, the comp and check star mags were relatively steady around  
9.1 and 11.2, but then started to drop off to 9.4 and 11.5 at the mid  
point, and then rapidly fall to 10.2 and 12.4 at the end.  Z AND  
shows no significant variation throughout in relation to the comp and  
check stars, meaning it tracks their behavior.

       I am looking for recommendations on whether or not to report  
this as a time series, or just let the single observation stand.   
Thanks.


Rich Harvan HAV



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