Open the surface image
Open the proms image.

1-.Go to the surface image and using the "magic Wang" make click in any place around the sun disk.
2-.make sure you change the tolerance values until the selected area will cover only the black sky.
3-.Optional "go to "select>Feather" and select 3-5 pixels, that will smooth the edges.
4-.Go to "select>Inverse" that will inverse the selection.
4.1-.Now use the "move tool" on the surface click, hold and drag in to the proms image.
5-.(Optional)Move the sun disk until match the correct area on the proms image go to "Edit>free transform, if you need to change some values, this it is only useful if you change something between the imaging proms -- surface.