[daip] Possible problem with FRING

[Alice Argon]

Hi Amy,


I used AIPS NEW (31DEC00) for the single band solution (which has no problem) 
and AIPS TST for the multi-band test.  There are no multi-band solution 
extensions attached to the file you have, because I assumed that you would 
want to produce these yourself.

The file you got via anonymous ftp should have SN=5 and CL=8 tables.  I
redid the single-band delay calibration after you got your file (which 
produced further extensions) so that I could send you the exact inputs and so 
that I could double check the POSSM plots.  The single band POSSM plots (all 
baselines connecting antenna 4) still look good to me, i.e., no 10 degree 
slopes across individual bands or jumps between bands.

In summary:
 I ran FRING w/ aparm(5)=0 (i.e., single-band) in AIPS NEW using CL=7 to 
   produce SN=5
 I then ran CLCAL: SN=5 + CL=7 --> CL=8

To create a multi-band solution,
 please run FRING w/ aparm(5)=2 in AIPS TST using CL=7 to create SN=6 
  then  run CLCAL: SN=6 + CL=7 --> CL=9

Also, I reimported the data file from ~ftp/pub/nrao using FITLD and ran POSSM 
on CL=8.  MK is there.  You say you're not seeing it?



Thanks,
 Alice


On Tue, 22 May 2001, Amy Mioduszewski wrote:

> Hi Lincoln and Alice,
> 
> I am still a little trying to figure out your bug.  If the FRING output you 
> sent me was correct then you are using 31DEC00 version which is known to 
> have a  problem with APARM(5)=2.  Are you sure you are using a fixed version?
> 
> Also, I have run TST and OLD on the dataset and get almost the exact same 
> thing when I plot the data using POSSM.  So I don't think that this is a bug 
> introduced when Eric did his fix of a couple weeks ago.
> 
> I also still cannot exactly replicate your "good" run which produced SN/5 in 
> the fits file you sent me, where for some reason MK is missing.  Are you 
> sure you sent me the right SN/CL tables, in your e-mail where you included
> the inputs to FRING you mention a SN/7, which does not exist in the file you 
> sent me.
> 
> Cheers,
> 
> Amy
> 
>