[daip] coordinates

[Eric Greisen]

Lawrence Rudnick writes:
 > Eric - is there any facility in aips, or do you have recommendations, 
 > for making "all sky" images in equal-area or similar projection?   I've 
 > been doing some filtering and convolution of NVSS down to 120" pixels 
 > and want to make a single large image if i can.  thanks. lr
 > 

AIPS understands Aitoff projection fairly well - but it really should
use ra=0, dec=0 (esp latter) for the reference pixel value.  You can
use OHGEO and COMB from there.

Eric