AAVSO: American Association of Variable Star Observers

Transform Computations (Abstract)

Volume 48 number 1 (2020)

George Silvis
194 Clipper Road, Bourne, MA 02532-3525; gasilvis@gmail.com

Abstract

(Abstract only) We understand that it is important to transform our photometric data, but the computations can be complex. Too often the presentations of how to do this are “tldr” (too long, didn’t read). And they often just cover the trivial case of two filters. I'll present how transformation is done in the Transform Applier application (ta) and in the vphot implementation of ta. I’ll show how the computation can be generalized to even an excel spreadsheet.