I was curious as to what others may use on here for double star measures? I'm just beginning my steps into this and am learning slowly and thought I might be able to get some pointers on what software is recommended. These measures would be done using CCD images and I know there are apps out there but was wondering which ones were easiest to get started with and how to get the star catalogs to use with them. Also, any pointers on how to use them would be appreciated too! Thanks!