[daip] 31DEC13, NOIFS problem

[Eric Greisen]

On 06/27/2016 06:27 AM, 정다운 wrote:
> Hello, I'm a graduate student in Yonsei University in Korea.
>
> I've been studying VLBI data calibration using AIPS.
>
> However, I have a problem with NOIFS( AIPS 31DEC13).
>
> When I run POSSM after NOIFS, I receive this massage, and this picture.
>
> LOCALH> POSSM1: POSSUV: on baseline(s) KU       - KY
> LOCALH> POSSM1: Covering timerange  00/11:27:46 -  00/11:28:16
> LOCALH> POSSM1: Will plot  1024 channels *  1 IFs polarization LL
> LOCALH> POSSM1: FILLPL: Amplitude mean: NaN          rms: NaN
> LOCALH> POSSM1: FILLPL: Phase mean: NaN          rms: NaN
> LOCALH> POSSM1: Doing: KU - KY     IF: 1
> LOCALH> POSSM1: -------------------------
> LOCALH> POSSM1:     1012 vectors truncated at edges
>
> 본문 이미지 1
>
> I don't know why "1012 vectors truncated at edges" is reported and odd
> figures are presented.
>
> I really want to know how to solve this problem.


NOIFS was not really intended for VLBI data but it should work.

Can you send me IMHEAD outputs for the UV data sets input to NOIFS and 
output from NOIFS.  Also I would be curious to see the POSSM done before 
NOIFS (use APARM(9)=3).

Eric Greisen