computing latitude/longitude from RA/Dec?

[mdhoney]

Assuming I take a picture of the sky and get the RA/Dec coordinates using Astrometry.net or something similar - can Skyfield help me work out the location on Earth the picture was taken from? I also have the azimuth/elevation the camera was pointed at, and the time (UTC) the picture was taken.
I previously attempted to do this using PyEphem but got stuck... Grateful for any help. Thanks!