Functions for Data Output

int fits(a_image *data, char* fname)
This function will convert an a_Image structure into a fits file titled fname.

int fits_head(a_Image*,a_pointing_object *)
This function writes a full fits file from the data contained in the a_Image file and places the information for the image subject in the header from the a_pointing object.

int tocfitsio(a_Image *, char *fname)
This function creates a fits file from an aiss image file using cfitsio.

int fromcfitsio(char *fname, a_Image *data)
This function fills an aiss image struct with data read from a FITS file using cfitsio.