资 源 简 介
As you work your way up the learning curve of CCD photometry one of the later refinements is to develop transform coefficients for your telescope/filter/CCD camera setup. There are several references from the AAVSO website on how to do this and I’ve included some of them below. Once you have your coefficients you need to apply them to your observations. This can be a confusing process and usually involves transcribing your data to various spreadsheets. I offer here an application that is meant to make that process of applying your coefficients simple, consistent and easily traceable.
There is lots of discussion on how exactly you should apply your coefficients. Starting from the AAVSO website you have the article by Benson, Priscilla. "CCD Transformation Coefficients" , AAVSO Information Sheet, www.aavso.org, 1993. ( http://www.aavso.org/sites/default/files/benson.pdf )
And then Lou Cohen’s article tries to explain it further and correct minor errors : Cohe
