HRMA_EA.fits: HRMA off-axis effective area.

The first three extensions have a 3D image of the effective area for
all shells, shells 1+3, and shells 4+6..  The image axes are theta
(off-axis angle), phi (azimuth), and energy.

Extensions 3-5 hold the grids for the axes, since they are non-linear.

The final three extensions are 3D images to hold uncertainties in the
effective area and have the same structure as the effective area.
They have been made up to be 1% of the effective area.

Azimuthal dependence was made up (and is actually constant in this
file). 

Data source:
   http://asc.harvard.edu/cal/hrma/LNhrma.dir/orbitEA/hrma_offaxis.rdb
  


  No. Type     EXTNAME      BITPIX Dimensions(columns)
 						      
   0  PRIMARY                -32     8 8 1150         
   1  IMAGE    Aeff13        -32     8 8 1150         
   2  IMAGE    Aeff46        -32     8 8 1150         
   3  BINTABLE TGRID           8     6(2) 8           
   4  BINTABLE PGRID           8     6(2) 8           
   5  BINTABLE EGRID           8     6(2) 1150        
   6  IMAGE    dAeff         -32     8 8 1150         
   7  IMAGE    dAeff13       -32     8 8 1150         
   8  IMAGE    dAeff46       -32     8 8 1150         



___Column_Names_________Formats______Dims______Units___

BIN                        I                   bin
THETA                      J                   arcmin
 
BIN                        I                   bin
PHI                        E                   deg
 
BIN                        I                   bin
ENERGY                     E                   keV