It just took me 15 minutes to make a panorama for kstars (a very similar program, I assume the same image would work in both) using an android phone and the goo

It just took me 15 minutes to make a panorama for kstars (a very similar program, I assume the same image would work in both) using an android phone and the google 'street view' app. The street view app is intended for making panoramas for submission to google maps... but you can just not submit the images, and they get stored locally in the photos folder. After that you just load it in gimp to erase the sky and save the result as an image with an alpha channel. The hardest part was aligning the image to make north agree exactly -- but unless you're going to use the image to map out visibility for astrophotography you don't have to get it exactly right.