These are approximately 70 x 50 degrees FOV, or a 45 degree radial from the center of the field.
So what is it good for, well I can see omega centauri and stars down to mag 6. It should catch bright satellites and perchance a bright meteor.
The second phase of this project, was to boggee into the phone case a Star Analyzer 100 grating.
[ phone case]
So the next steps is,
to refine focus,
try out on a guided mount for better noise reduction,
Then figure out how many phones it take to cover the whole sky.
An lastly figure out how to make the phone tweet a picture on a detected brightness change in any FOV. As it could be plane, satellite, or meteor.....the tweeteor project ...8)