[daip] New Ticket - [!LMB-468005]: Trouble DBCON-ing GBT data
Katie Mae Chynoweth
do-not-reply at nrao.edu
Tue Feb 1 15:04:58 EST 2011
New Ticket: Trouble DBCON-ing GBT data
I have two datasets that were taken with the exact same setup, so they ought to be DBCON-ing with no trouble. However, I get this error message:
localh> DBCON1: MULTI-FREQUENCY DATA BASES INCOMPATABLE
There are slight differences in the frequency reference and channel width values. I tried changing the headers so those values are the same, but I get the same error message. Is there a way to combine these two UV datasets? I've put the image headers below.
Thanks,
Katie
Here are the two file headers:
>getn 19
AIPS 1: Got(1) disk= 1 user= 101 type=UV M101.1417.1
>imh
AIPS 1: Image=M101 (UV) Filename=M101 .1417 . 1
AIPS 1: Telescope=NRAO_GBT Receiver=Rcvr1_2
AIPS 1: Observer=Katie Ch User #= 101
AIPS 1: Observ. date=25-JAN-2011 Map date=01-FEB-2011
AIPS 1: # visibilities 1400 Sort order TB
AIPS 1: Rand axes: RA DEC BEAM TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 512 1.4179228E+09 257.00 2.4412320E+04 0.00
AIPS 1: RA 1 14 02 11.060 132.00 88.000 0.00
AIPS 1: DEC 1 54 20 55.694 66.00 88.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Conv size= 523.33 X 523.33 Position angle= 0.00
AIPS 1: Rest freq 1420.406 Vel type: OPTICAL wrt SUN
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 358.71
AIPS 1: Maximum version number of extension files of type HI is 1
>getn 20;imh
AIPS 1: Got(1) disk= 1 user= 101 type=UV M101.1417.2
AIPS 1: Image=Ref (UV) Filename=M101 .1417 . 2
AIPS 1: Telescope=NRAO_GBT Receiver=Rcvr1_2
AIPS 1: Observer=Katie Ch User #= 101
AIPS 1: Observ. date=28-JAN-2011 Map date=01-FEB-2011
AIPS 1: # visibilities 220 Sort order TB
AIPS 1: Rand axes: RA DEC BEAM TIME1
AIPS 1: ----------------------------------------------------------------
AIPS 1: Type Pixels Coord value at Pixel Coord incr Rotat
AIPS 1: COMPLEX 3 1.0000000E+00 1.00 1.0000000E+00 0.00
AIPS 1: STOKES 2 -1.0000000E+00 1.00 -1.0000000E+00 0.00
AIPS 1: FREQ 512 1.4179067E+09 257.00 2.4412359E+04 0.00
AIPS 1: RA 1 14 03 05.425 390.00 88.000 0.00
AIPS 1: DEC 1 55 06 18.569 220.00 88.000 0.00
AIPS 1: ----------------------------------------------------------------
AIPS 1: Coordinate equinox 2000.00
AIPS 1: Conv size= 523.33 X 523.33 Position angle= 0.00
AIPS 1: Rest freq 1420.406 Vel type: OPTICAL wrt SUN
AIPS 1: Alt ref. value 0.00000E+00 wrt pixel 359.37
AIPS 1: Maximum version number of extension files of type HI is 1
Ticket Details
===================
Ticket ID: LMB-468005
Department: AIPS Data Processing
Priority: Default
Status: Open
Link: https://help.nrao.edu/staff/index.php?_m=tickets&_a=viewticket&ticketid=620
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