Re: GSC 540-84

[Michael Koppelman <lolife@bitstream.net>]

I actually got a nice steady night last night:

http://www.lolife.com/astronomy/gsc540-84/gsc540-84_20030804.jpg

My comp star 1-sigma was 0.004! That's pretty good for me. The size of 
the dots is the size of the error bars.

I'm still a little confused on this one. Using Patrick's period, which 
was confirmed by Chris Lloyd we get this:

http://www.lolife.com/astronomy/gsc540-84/gsc540-84_phase.jpg

Using double that period we get this:

http://www.lolife.com/astronomy/gsc540-84/gsc540-84_dbl_phase.jpg

The data from 07/29/03 seems discrepant at the start and end of the 
night if the period is not doubled. If the period is doubled it seems 
like the end of that night of 7/29 has problems. If you assume that no 
data has problems, something weird is going on.

Michael Koppelman