[Aavso-photometry] xform question

[Michael Koppelman]

Actually one needs to determine B-V, not B and V. Thus one first 
calculates B-V from b-v and then uses the derived B-V in the V equation 
to determine V.

At least that is my understanding.

Cheers,
Michael Koppelman
http://www.lolife.com/astronomy/



On Dec 11, 2004, at 5:48 PM, Radu Corlan wrote:

> in the above equation, are the B and V in coeff*(B-V) standard
> magnitudes? If this is the case, then one needs to build a system of
> equations to determine B and V (this is the approach i took in gcx).