Re: re HD 155229

[Tom Droege <tdroege2@earthlink.net>]

I remind everyone that I have been busy doing just this (below).  It will 
not be long.  I think I already have some loop closing data.  i.e. stars 
that I measured a year ago.  Then there is the question as to whether I 
have fields that overlap for 360 degrees.  I think there are still a few 
holes.  I will have to look carefully.

Tom Droege




>   There's an expression in the photometric business: "closing the
>loop."  It refers to a hypothetical moment when one has been observing
>a system of stars for an entire year, so that one sees again for the
>first time the stars one observed at the start of the project.  If one
>has been calibrating stars relative to each other, one has information
>like this: