Description:
This routine shifts the
position of the Nasmyth centre of a SCUBA array. It can be used to take out the small difference between the
centres of the LONG and SHORT wave arrays. Should be run after
extinction.
Usage:
change_nacentre [-h
| -v] infile dx dy
Parameters:
−h
Return
a help message only.
−v
Return the version number of scunoise
infile
Input file name. The file is modified in
place.
dx
Shift in Nasmyth X (du3) direction
dy
Shift in Nasmyth Y (du4) direction
Examples:
change_nacentre
Will prompt for input file name and shift change_nacentre file 5
−3
Will move the array
centre of file.sdf by (5,−3)
arcsec. Notes:
This command can only be reversed by running
change_nacentre with minus the
previous X,Y shift.
extinction must have been run on the input file (otherwise the file will contain
more than 1 array) – this is not checked for explicitly.
Related Applications
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