[daip] velocity resolutions

[Eric Greisen]

Doug Ratay writes:
 > Hi.  I have a quick question about matching velocity resolution of 21cm
 > data.  I have VLA 21cm observations of a galaxy in B, C, and D
 > configurations.  This data is all 32 channel 20km/s resolution.  I have
 > observations coming up for more D config time on the same object.  I'd
 > like to observe with 64 channel 10km/s resolution, but I'm worried that
 > AIPS might get touchy about that.  Is that the case?  If so, do you have
 > any suggestions?  Thank you very much.
 > 						Doug Ratay

The use of DBCON for imaging is what will give you problems.  You will
have to make all of the configurations have the same resolution for
the imaging.  This can be done with AVSPC to reduce the number of
channels or with SPECR to reduce or increase the number of channels.

It might be better not to change the parameters because you still need
the central velocity of the ref channel to be the same too.

Eric Greisen