[Aavso-photometry] Reporting transformed data

[George Silvis]

When you report un transformed data, CMAG and KMAG are your 
instrument magnitudes and VMAG is (at least from AIPWIN):
VMAG= Vinstrumentmag - (Cinstrumentmag -Creferencemag). This is 
equivalent to adjusting your Zero Point so that your 
Cinstrumentmag==Crefrencemag.

So what should be reported if you do transform the data? VMAG is now 
transformed, but it is unclear to me what should be reported for CMAG 
and KMAG or if there is any value to these values. What should be reported?

Also, Cohen's article spoke of submitting your transform coefficients 
to the AAVSO. Is that still done and to whom?

Suggestions/Instructions?


I've finally computed my transform coefficients with help from the 
forum here and Lou Cohen's article. I've got a spread sheet (don't we 
all!) that takes 4 AIPWin reports and kicks out the numbers.

Working with 3 image sets of M67 I derived for my CB245 camera the 
following coefficients:
     Tbv    Tvr    Tri     Tv     Tr
    1.071  0.995  1.013 -0.067  0.098
+/- .014   .014   .036   .007   .016

Does anyone else in the group have transform coefficients for a 
CB245? Do your values look anything like these?

Cheers,
George
SGEO