CSC: COBE quadrilateralized Spherical Cube

This equal area projection shows an entire sphere with a minimum of distortion by projecting it onto the six faces of a cube. The faces are stored as the third dimension of the image and numbered, contrary to the 1-based FITS convention, 0-5 as shown in the diagram above. This projection was developed to archive data from the COBE (COsmic Background Explorer) satellite.

SIMPLE  =                    T / file does conform to FITS standard
BITPIX  =                  -32 / number of bits per data pixel
NAXIS   =                    3 / number of data axes
NAXIS1  =                  128 / length of data axis 1
NAXIS2  =                  128 / length of data axis 2
NAXIS3  =                    6 / length of data axis 3
CTYPE1  = 'RA---CSC'
CTYPE2  = 'DEC--CSC'
CTYPE3  = 'CUBEFACE'
CRPIX1  =                 64.5  / reference pixel
CRPIX2  =                 64.5  / reference pixel
CRVAL1  =                  0.0 / reference pixel value
CRVAL2  =                  0.0 / reference pixel value
CDELT1  =            -0.703125  / degrees/pixel
CDELT2  =             0.703125  / degrees/pixel