Content-type: text/html Manpage of dwell

dwell

Section: User Commands (1)
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NAME

dwell - Calculate dwell time for given array configuration  

PERSON RESPONSIBLE

mwp  

CATEGORIES

utility  

DESCRIPTION

DWELL - Calculate the dwell time for a given array configuration. The dwell time is the maximum amount of time that can be spent on a given field before the longest baseline rotates to a completely independent visibility point. It is given by

tdwell = (43200/pi)*(D/L)*(1/N)

where D is the antenna diameter, L is the longest baseline, and N is the number of fields.

This task can be used to help maximize the on-source time and increase observing efficiency. It is of most use when planning mosaic observations.  

PARAMETERS

ary
The name of a text file containing the antenna positions (in nanosec and either topocentric or geocentric coordinates). Can be either same format as for uvtrack ("ary format") or uvgen ("ant" format). No default.
format
Format for array file, "ant" or "ary", indicating styles of $MIRCAT/*.ant[pos] or $MIRCAT/*.ary, respectively. Default is "ant".
nfields
Number of fields in the mosaic. No default.
antdiam
Antenna diameter (m). Default=6.1
options
verbose Print out the antennna pairs and baseline lengths


 

Index

NAME
PERSON RESPONSIBLE
CATEGORIES
DESCRIPTION
PARAMETERS

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Time: 18:35:38 GMT, July 05, 2011