[Aavso-photometry] V filter only - transforms possible?

[Greg Crawford]

>Most software and spreadsheets I've seen only deal with the case of
transforming 
>all-sky photometry.  But, most of the CCD observations submitted to the AAVSO 
>are differential.  So, a spreadsheet template along with some worked examples 
>might save observers from having to 'roll their own' and help make sure that 
>everyone is doing this correctly.

Bob, 

Take a look at the capabilities of MPO Canopus. See here:
http://www.minorplanetobserver.com/MPOSoftware/MPOCanopus.htm

There is a specific AAVSO routine included in the software making it very easy
to calculate transforms and apply them to instrumental measures. All is done
internally, with plots of transform slopes to evaluate the quality of them. The
specific section of the software is "PhotoRed", which abbreviates "photometric
reductions.

- Greg