Microsoft may not be responsible for this library, but they are responsible for their extension realization. The same way that "realization of this package was made possible thanks to ...", you can ask them to also add the cfitsio (or whatever other existing FITS library they might choose) to their extension to make that realization more capable, or ask them to create a new extension.
Microsoft may not be responsible for this library, but they are responsible for their extension realization. The same way that "realization of this package was made possible thanks to ...", you can ask them to also add the cfitsio (or whatever other existing FITS library they might choose) to their extension to make that realization more capable, or ask them to create a new extension.