Mosaic wcs

Hello, I set up a mosaic using reproject_and_coadd, but the mosaic has no wcs configured. Is there any way to preserve the wcs of the original images in the mosaic? I need a mosaic with accurate wcs. Can reproject_and _coadd do this?

Start by reading the reproject_and_coadd entry point and its current output handling, then trace how the original image WCS information is represented. Determine whether the mosaic can preserve accurate WCS and document or test the expected behavior; done means the resulting mosaic has usable WCS information.

Written by the indexing model from the issue text.