Getting Started Documentation Glish Learn More Programming Contact Us
Version 1.9 Build 1556
News FAQ
Search Home


next up previous contents index
Next: imagerlongtest - Function Up: imager - Module Previous: imagermaketestcl - Function


imagertest - Function



Package synthesis
Module imager


Perform a test of imaging from a standard MeasurementSet


Synopsis
imagertest(size, cleanniter, cleangain, doshift, doplot)


Description
Perform a test. The dataset used is an observation of 3C273 at 8GHz using the C-configuration of the VLA. It is part of the AIPS++ distribution.

Note that if doshift is set to T then the imaging is done in Galactic coordinates.

The test does the following:

  • The uvfits file that is to be read in is in a standard place in the AIPS++ code source area.
  • The MeasurementSet is read from the uvfits file.
  • A summary of what exists is logged.
  • The data are weighted using the Briggs algorithm.
  • An initial CLEAN-only deconvolution is performed, and then restored.
  • A CLEAN mask is constructed by thresholding I > 0.015
  • The deconvolution is repeated with masks enabled.
  • Residual images are calculated for the North Celestial pole, on the Sun, and for azimuth elevation (0d, 0d).



Returns
Bool


Arguments

size Number of pixels on a side
Allowed: Int
Default: 128
cleanniter Number of clean iterations
Allowed: Int
Default: 1000
cleangain Clean loop gain
Allowed: Float
Default: 0.1
doshift Shift the phase center
Allowed: Bool
Default: T
doplot Plot?
Allowed: Bool
Default: T


Example
include 'imager.g'
imagertest(size=256)





next up previous contents index
Next: imagerlongtest - Function Up: imager - Module Previous: imagermaketestcl - Function   Contents   Index
Please send questions or comments about AIPS++ to aips2-request@nrao.edu.
Copyright © 1995-2000 Associated Universities Inc., Washington, D.C.

Return to AIPS++ Home Page
2006-10-15