SCUBA2_MAP_PSPEC

Calculate the noise power spectrum of a SCUBA-2 map

Description:

Calculate the azimuthally-averaged spatial power spectrum of a SCUBA-2 map. The map is trimmed to a given size (rectangular or circular) before having the source emission masked out. The power spectrum is calculated and smoothed with a 5-pixel boxcar. The peak and half-power points are determined and reported to the user in terms of angular scale on the sky. Finally the mean power on various scales is calculated and reported from the beamsize up to the length scale defined by the filtering when the map was made.

Notes:

Creates a 1-dimensional output file for each input file with suffix _pspec.

Available Parameters :

The following parameters can be set via the -recpars option:
APERTURE_RADIUS
Radius of aperture used to mask out a source at the map centre (if MASK_METHOD = aperture). Default is 30 arcsec.
CROP_METHOD
Method to use for trimming image. May be rectangle or circle.
MAP_HEIGHT
Height of output map in arcsec.
MAP_RADIUS
Radius of output map in arcsec (if CROP_METHOD=circle).
MAP_WIDTH
Width of output map in arcsec.
MASK_METHOD
Method for masking out source emission. May be aperture or snr (default).
SNRCUT
Signal-to-noise ratio cut to apply to mask out source emission (if MASK_METHOD=snr). Default is 3 if not specified.
VERBOSE
Flag to indicate more information should be written to the screen. Default is 0 (do not write extra).

Display

None.
Copyright © 2014 University of British Columbia and the Science & Technology Facilities Council