>> In spite of that, isn't it accepted that as long as the observer logs which comparison stars were used and which chart was used, any magnitude estimate of a variable star can be corrected once any errors in comparison stars are found and corrected? (Unless of course a comparison star is found to be variable?) It just seems to me that the important thing is to make the estimate and get all of the information down. The corrections, if need be, will come in time. Paul, the problem is that when the variable star can not be plotted correctly, no correctrion is possible!! You'll be estimating the wrong star! I don't want to bother anyone, just to ask for more care when marking variable stras in the charts! Sebastian.
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