[daip] Re: Aips header question

[Eric Greisen]

Preethi Pratap writes:
 > Hi,
 > 
 > I've been working with an image from the NRAO "Images from the Radio
 > Universe" CD. This is the Haslam et al. 408MHz all sky map. The header
 > claims that the units are "LL, MM". I couldnt find a description of these
 > units in aips. I assumed they are related to lii, bii but I was wondering
 > if you could shed some light on this.

This is a very old image from the earliest days of imaging at the VLA.
By LL/MM we meant what is now called RA---SIN/DEC--SIN.  Inside AIPS
there are places that still understand this translation, but we do not
advertise that.

Eric Greisen