[daip] problem with a task 'rm'

[Eric Greisen]

Vladimir Shoutenkov wrote:
> Dear Dr. Greisen,
> 
> I have AIPS version 31DEC12 which I installed Jul 31, 2012.
> 
> The problem is: there is no BPARM parameter in task 'rm' (see
> attachment).
> 
> As I saw at website http://www.aips.nrao.edu/cgi-bin/ZXHLP2.PL?AFARS
> this parameter is presented in 2013 AIPS version. Isn't it?
> 
> Should I reinstall my AIPS or should I do something else?
> 
> Thank you in advance.
> 
> Best regards,
> 
> Vladimir Shoutenkov.
> 

I am baffled by your question.  AFARS is a task meant to interpret the 
output of the task FARS.  AFARS has an adverb BPARM to guide it in doing 
this.

The task RM is completely independent (and much older) than the above 2 
tasks.  It has an adverb APARM to guide it.

FARS uses the method of Faraday rotation measure synthesis - taking FFTs 
along the lambda squared axis.  RM does a least-squares fit instead and 
directly outputs an RM image while FARS outputs a cube image with 
rotation measure as the first axis.  AFARS then makes an rm image by 
finding the peaks along the rotation measure axis.

ERic Greisen