[daip] frequency channel information in IMHEADER

[Eric Greisen]

Amy Mioduszewski writes:
 > Hi Joe,
 > 
 > Well to start, the labeling on the single channels made separately 
 > SHOULD be the lower edge.  But without details of how you made the 
 > images I cannot be sure.

   THIS IS NOT CORRECT.  THE CENTER OF THE PIXEL/VOXEL IS THE
REFERENCE POSITION.

Eric

 > 
 > The rest of your message I am confused about (probably because I am not 
 > a spectral line expert) but are you both trying to make a cube and 
 > concatenate channels?
 > 
 > This is what EXPLAIN MCUBE says about the frequency axis:
 > 
 > 2. The interval between planes is given by: frequency of map
 >         (IN2SEQ) - frequency of (INSEQ) divided by (AX2REF - AXREF).
 > 
 > Cheers,
 > 
 > Amy
 > 
 > _______________________________________________
 > Daip mailing list
 > Daip at listmgr.cv.nrao.edu
 > http://listmgr.cv.nrao.edu/mailman/listinfo/daip