[evlatests] Mosaicking

[Gustaaf van Moorsel]

Mosaicking works much better now but isn't quite there yet.  My test
consisted of 5 scans, some regular pointing, some mosaicking, all
starting on the same calibrator.  The order of the scans:

1 - regular calibrator scan
2 - mosaicking scan (RSL mode), 6 samples
3 - mosaicking scan (regular, no RSL mode), 6 samples
4 - regular calibrator scan
5 - mosaicking scan (regular, non-RSL mode), 6 samples

Results:

a - For the first time, the proper names are being created for the
     individual Mosaicking samples
b - Sample positions between RSL and regular mosaicking differ slightly
     in RA, and are identical in Dec, as expected
c - the only problem I can see is that an extra scan is being inserted
     when transitioning to a Mosaicking scan (whether from a regular cal-
     ibrator scan or another Mosaicking scan).  This extra scan has the
     name of the preceding source or sample, but the position of the first
     sample of the new scan.

An example of c) is scan 9 in the following listing.  Scan 9 has the name
of the previous sample, 09273+39084, which is the last sample of the first
mosaicking scan.  But it gets assigned the position of the first sample of
the next mosaicking scan (09270+39023).  AIPS catches this and appends the
string '08' to the end of the 09273+39084 in order to tell them apart. The
same is true for scans 16/17, and maybe for scan 2 as well.

Scan      Source      Qual  Calcode Sub         Timerange          FrqID   START VIS  END VIS
    1 0927+390        : 0000  A        1  0/02:13:40 -   0/02:24:50     1       1     171859
    2 0927+390        : 0000  A        1  0/02:24:51 -   0/02:25:10     1  171860     183934
    3 09270+39023     : 0000  A        1  0/02:25:10 -   0/02:25:40     1  183935     203231
    4 09271+39035     : 0000  A        1  0/02:25:40 -   0/02:26:10     1  203232     222206
    5 09271+39047     : 0000  A        1  0/02:26:10 -   0/02:26:40     1  222207     241549
    6 09272+39060     : 0000  A        1  0/02:26:40 -   0/02:27:10     1  241550     260616
    7 09272+39072     : 0000  A        1  0/02:27:10 -   0/02:27:40     1  260617     279936
    8 09273+39084     : 0000  A        1  0/02:27:40 -   0/02:27:40     1  279937     280189
    9 09273+39084   08: 0000  A        1  0/02:27:41 -   0/02:28:00     1  280190     288453
   10 09270+39023     : 0000  A        1  0/02:28:00 -   0/02:28:30     1  288454     306807
   11 09271+39035     : 0000  A        1  0/02:28:30 -   0/02:29:00     1  306808     323621
   12 09271+39047   09: 0000  A        1  0/02:29:00 -   0/02:29:30     1  323622     341359
   13 09272+39060   0A: 0000  A        1  0/02:29:30 -   0/02:30:00     1  341360     359696
   14 09272+39072   0B: 0000  A        1  0/02:30:00 -   0/02:30:30     1  359697     371840
   15 09273+39084   0C: 0000  A        1  0/02:30:30 -   0/02:32:50     1  371841     456739
   16 09273+39084   08: 0000  A        1  0/02:32:50 -   0/02:39:50     1  456740     707899
   17 09273+39084   08: 0000  A        1  0/02:39:51 -   0/02:40:10     1  707900     719790
   18 09270+39023     : 0000  A        1  0/02:40:10 -   0/02:40:40     1  719791     736555
   19 09271+39035     : 0000  A        1  0/02:40:40 -   0/02:41:10     1  736556     755422
   20 09271+39047   09: 0000  A        1  0/02:41:10 -   0/02:41:40     1  755423     773443
   21 09272+39060   0A: 0000  A        1  0/02:41:40 -   0/02:42:10     1  773444     792625
   22 09272+39072   0B: 0000  A        1  0/02:42:10 -   0/02:42:40     1  792626     810691
   23 09273+39084   0C: 0000  A        1  0/02:42:40 -   0/02:44:00     1  810692     862418


Gustaaf