about function "sep.sum_ellipann" #169
Description
I am a little confuse about the input "a, b, theta, rin, rout". As this function is used for the photometry of elliptical annular, why there is no need to input the parameters of outer and inner ellipse? Does the "a, b, theta" is regarding for outer ellipse? By the way, what is "rin, rout"? These informations above seem not to make clear in your documentation. Thank you very much if you can answer these questions.
