Right now it appears that SPyFFI is writing an empty string to the `CAMERA` header. It should stop doing that and write a non-negative integer to `CAMNUM` to be consistent with tess_obsim.
Right now it appears that SPyFFI is writing an empty string to the
CAMERAheader.It should stop doing that and write a non-negative integer to
CAMNUMto be consistent with tess_obsim.