MOPEX Online Manual

PRF Estimate Modules: Crop Stack

PURPOSE

This module cuts out postage stamp images from the input images around each point source from the input point source list given in POINT_SOURCE_LIST. If a single image name is specified (INPUT_FILE_NAME), the postage stamps are cut from that image. If a list of images is specified (IMAGE_STACK_FILE_NAME), then the postage stamp images are cut from each image in the list.

PARAMETER BLOCK

&CROP_STACK
  PostStamp_Xsize = 21,
  PostStamp_Ysize = 21,
  X_Column_Name = 'RA',
  Y_Column_Name = 'Dec',
  TransformationType = 'SkyToPlane',
&END

INPUTS

PostStamp_Xsize, PostStamp_Ysize: (int) The X and Y size, in pixels, of the postage stamp to cut out around each point source.

X_Column_Name, Y_Column_Name: (string) The name of the columns within the input file which give the position of each point source. The position should be specified as either 'RA', 'Dec' or 'X', 'Y'.

TransformationType: (string) The type of transformation required to use the input positions. If the positions are given in sky coordinates then the transformation type should be set to 'SkyToPlane'. If the positions are given in pixel coordinates in some image frame (e.g. mosaic image), then the transformation type should be set to 'PlaneToPlane'. In this case a file describing the image frame should also be given (e.g. an FIF.tbl file).

OUTPUTS

Generated FITS files: The stack of postage stamps for the point sources in the input list.

DISCUSSION

See the discussion of the processing stages for more information on the centering of each point source.