Converting Differential Photometry Results to the Standard System using Transform Generator and Transform Applier (Abstract)

Volume 44 number 2 (2016)

Marco Ciocca

212 Eastway Drive, Richmond, KY 40475; marco.ciocca@eku.edu

Abstract

(Abstract only) Since Fall of 2014, AAVSO made available two very useful software tools: transform generator (tg) and transform applier (ta). tg, authored by Gordon Myers (gordonmyers@hotmail.com), is a program, running under python that allows the user to obtain the transformation coefficients of their imaging train. ta, authored by George Silvis (SGEO@gasilvis.net), allows users to apply the transformation coefficients obtained previously to their photometric observation. The data so processed become then directly comparable to those of other observers. I will show how to obtain transform coefficient using two Standard Field (M 67 and NGC7790), how consistent the results are and as an application, I will present transformed data for two AAVSO Target stars, AE UMA and RR CET.