I'm trying to figure out how the little transform check box near the top of the Photometry Report works. I think I understand the theory, but how/where do I input the color index for the variable? (The B,V,I magnitude transforms are already in my telescope setup in Admin.
I couldn't find anything about this in the latest VPhot users guide. The Help page within VPhot has a very brief description, but doesn't explain how to input the color index.