Hi Glenn. Many plate solving applications do not require internet access as the index files are stored on the pc. There is quite a choice including Platesolve2, Astrometry.net and Elbrus that all work standalone. I used to find targets the way you do but would rather spend my precious dark sky time imaging than trying to frame a target. Not sure what capture software you use however Platesolve2 and Astrometry.net are well integrated in SGP. Pixinsight are also working on telescope control capability and PI also has platesolving capability.
|