This photo is a collage for the following reasons:
1) The moon (one day after full moon) rises with the dark (not illuminated) side up also the most brilliant, rayed crater (Tycho) on the moon should be more towards the right. This leads to the clear conclusion that the picture of the moon was made when it was high in the sky and NOT on the horizon.
2) The nearly full moon is situated opposite to the sun direction. One does not see dawning or dusky horizons near to it but in exactly the opposite direction close to the sun.
3) The star field is several magnitudes weaker than the faint(!) part of the moon. It is impossible to capture this in a single exposure.
4) The starfield including the horizon seems to be taken at a much shorter focal lengths. I could not identify the constellations but one gets the impression that it includes some starclouds of the milky way. This would force the full moon being observed around december or June/July. During these months the (full) moon does not rise at 6:50pm.
If I would invest more time one could maybe find more weak points....
Franz (professional Astronomer and amateur photographer)