Not quite what you're looking for, but there is Spice. http://naif.jpl.nasa.gov/naif/toolkit.html http://naif.jpl.nasa.gov/naif/toolkit.html It is used for ge

Not quite what you're looking for, but there is Spice. http://naif.jpl.nasa.gov/naif/toolkit.html http://naif.jpl.nasa.gov/naif/toolkit.html It is used for general astrometry (coordinate frame transfer and time references). It also can help you point your camera in the right spot as it can model relativity. AGI's STK is basically a wrapper around this JPL product.