[daip] Re: be026a (fwd)
Dieter Engels
st2b102 at hs.uni-hamburg.de
Thu May 25 11:30:02 EDT 2006
Hello Amy, the requested tables are attached to this mail.
In other observations we used an 8 MHz bandwidth and 256 channels
to obtain observations in RCP and LCP. BE026A was observed with
16 MHz bandwidth and 512 channels to have the same velocity resolution.
I recall discussions that the maximum spectral resolution would
be restricted by the bit rate and that in the case of the BE026A
settings we would loose one of the polarizations. That's why I am
confused.
I guess that I have to use ALTDEF to change the reference pixel before
using SPLIT to get the right velocity settings?
Regards, Dieter
On Wed, 24 May 2006, Amy Mioduszewski wrote:
> Hi Dieter,
>
> daip at nrao.edu is the right place to send AIPS questions.
>
> I looked at your .sum file and it looks like you observed RCP and LCP, so
> VLBAFIX(FXPOL) did the right thing by changing the 1 STOKES and 2 IFs to 2
> STOKES and 1 IF. The frequencies for the RCP and LCP should be the same.
>
> Could you send me a copy your FQ table and your SU table?
>
> > 4) Working on the VLBAFIXed dataset FXPOL I had two pseudo
> > polarizations LL and RR, in which the data apparently looked
> > slightly different.
> > Thats probably because they are from different IFs?
>
> I don't quite understand what you mean here. I doubt this has anything to do
> with FXPOL.
>
> Cheers,
>
> Amy
>
>
---------------------------------------------------------------------------
Dieter Engels e-mail: dengels at hs.uni-hamburg.de
Hamburger Sternwarte Internet: http://www.hs.uni-hamburg.de/~st2b102
Gojenbergsweg 112 Skype: dieter.engels
D-21029 Hamburg Tel: 49-40-42891 4136
Germany Fax: 49-40-42891 4198
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-------------- next part --------------
hspc33 PRTAB(31DEC04) 29 25-MAY-2006 15:46:52 Page 1
BE026A .UVDATA. 1 Disk= 9 FQ Table version 1
Title: AIPS UV DATA FILE FREQUENCY TABLE
Created by FITLD on 09-MAY-2006 14:13:44
Last written by FITLD on 09-MAY-2006 14:34:10
Ncol 5 Nrow 1 Sort cols:
Table has 1 keyword-value pairs:
NO_IF = 2
Table format incompatable with FITS ASCII tables
COL. NO. 1 2 3 4 5
ROW FRQSEL IF FREQ CH WIDTH TOTAL BAN SIDEBAND
NUMBER HZ HZ HZ
1 1 0.000000E+00 3.125E+04 1.600E+07 1
1 0.000000E+00 3.125E+04 1.600E+07 1
-------------- next part --------------
hspc33 PRTAB(31DEC04) 29 25-MAY-2006 15:47:55 Page 1
BE026A .UVDATA. 1 Disk= 9 SU Table version 1
Title: AIPS UV DATA FILE SOURCE TABLE
Created by FITLD on 09-MAY-2006 14:34:24
Last written by SETJY on 16-MAY-2006 16:31:07
Ncol 19 Nrow 4 Sort cols:
Table has 4 keyword-value pairs:
NO_IF = 2
VELTYP = LSR
VELDEF = RADIO
FREQID = 1
Table format incompatable with FITS ASCII tables
COL. NO. 1 2 3 4 5 6 7 8 9 10 11
ROW ID. NO. SOURCE QUAL CALCODE IFLUX QFLUX UFLUX VFLUX FREQOFF BANDWIDTH RAEPO
NUMBER JY JY JY JY HZ HZ DEGREES
1 1 19135+2131 0 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 3.125000E+04 2.888974E+02
1 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00
2 2 J1925+2106 0 N 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 3.125000E+04 2.914984E+02
2 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00
3 3 3C345 0 N 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 3.125000E+04 2.507450E+02
3 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00
4 4 3C454.3 0 N 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00 3.125000E+04 3.434906E+02
4 0.000E+00 0.000E+00 0.000E+00 0.000E+00 0.000000E+00
hspc33 PRTAB(31DEC04) 29 25-MAY-2006 15:47:55 Page 2
COL. NO. 12 13 14 15 16 17 18 19
ROW DECEPO EPOCH RAAPP DECAPP LSRVEL RESTFREQ PMRA PMDEC
NUMBER DEGREES YEARS DEGREES DEGREES M/SEC HZ DEG/DAY DEG/DAY
1 2.160920E+01 2.000000E+03 2.889366E+02 2.161268E+01 4.185209E+04 2.223508E+10 0.000000E+00 0.000000E+00
1 4.185209E+04 2.223508E+10
2 2.110727E+01 2.000000E+03 2.915377E+02 2.111145E+01 0.000000E+00 2.223420E+10 0.000000E+00 0.000000E+00
2 0.000000E+00 2.223420E+10
3 3.981028E+01 2.000000E+03 2.507791E+02 3.980398E+01 0.000000E+00 2.223420E+10 0.000000E+00 0.000000E+00
3 0.000000E+00 2.223420E+10
4 1.614821E+01 2.000000E+03 3.435304E+02 1.616296E+01 0.000000E+00 2.223420E+10 0.000000E+00 0.000000E+00
4 0.000000E+00 2.223420E+10
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