AIPS HELP file for UBAVG in 31DEC22
As of Mon Sep 25 23:29:33 2023
UBAVG: Baseline dependent time averaging of "BT" order uv data
INNAME Input UV data (name)
INCLASS Input UV data (class)
INSEQ Input UV data (seq. #)
INDISK Input UV data disk #
OUTNAME Output uvdata name (name)
OUTCLASS Output uv data class
OUTDISK Output uvdata disk #
OUTSEQ -1.0 32000.0 Output seq. no.
APARM (1) max. time (sec)
(2) = fov (min)
BADDISK Disk #'s to avoid
Use: Baseline dependent time averaging of uv data. The
averaging time is set by the field of view desired and a
specified maximum averaging time.
NB: data must be sorted to 'BT' order before running.
INNAME.....Input UV data file (name). Standard defaults.
INCLASS....Input UV data file (class). Standard defaults.
INSEQ......Input UV data file (seq. #). 0 => highest.
INDISK.....Input UV data file disk #. 0 => any.
OUTNAME....Output UV data name (name). Standard defaults.
OUTCLASS...Output UV data file (class).
OUTDISK....The disk # of output data. 0 => highest
OUTSEQ.....Output sequence number. 0 => new file.
APARM.....Task enrichment parameters.
(1) This gives the maximum averaging time in
seconds, 0=> infinite.
This parameter may be necessary if subsequent
editing or self calibration is required.
(2) This is the desired field of view (radius) which is
not to be distorted due to time averaging in minutes of
arc. 0 = > 20.
The field of view is the region in which averaging is
not to reduce the amplitude by more than 1 percent on any
baseline. No data separated by more than 268.5
wavelengths divided by APARM(2) are averaged together.
sinc(.0781) = 0.99 and .0781 * 60 *180 / pi = 268.5.
BADDISK...Disk #'s to avoid for scratch files