MOPEX Online Manual
| Contents | ~ | Previous: APEX Modules - Mosaic Coadder | ~ | Next: APEX Modules - Detect MedFilter |
APEX Modules: Mosaic Combine
Output Directory Keyword: COMBINER_DIR
Default Output Directory: <output_dir>/Combine
Depends on: Mosaic Coadder
Important Notes: This module is only required in the APEX flow when running APEX Multiframe (apex.pl). If a mosaic has previously been created using mosaic.pl then this module can be dropped from the apex.pl flow, and the mosaicking results used as input instead. See the Discussion below for more details. Note that APEX does not carry out any outlier rejection when creating the mosaic. Use mosaic.pl to carry out outlier rejection before using the results as input into APEX.
PURPOSE
-
This module combines the co-added tiles into a mosaiced image. Even if the Coaddition has been done in a single tile, this module must be run in order to produce the expected outputs.
PARAMETER BLOCK
- There is no parameter block for this module.
INPUTS
There are no user-defined inputs for this module.
OUTPUTS
Median Tile BCD File (Coadd-mosaic/coadd_median_tile_bcd.txt): This text file lists the input images which contribute to each output tile of the median mosaic. The format of the file is the tile ID, the number of contributing images, and the image index within the stack.
Median Tile Table (Coadd-mosaic/coadd_median_tiles.tbl): A table listing the tiles of the median mosaic, their sizes, and their offsets in the x- and y-directions with respect to the FIF.
Mosaic Median File (median_mosaic.fits): The output median mosaic.
Mosaic image File (mosaic.fits): The output mosaic FITS image. When displayed in the GUI, the footprint of the interpolated input images is overlaid on the mosaic. It may be turned off using the "Mosaic" check box in the display window.
Mosaic uncertainty File (mosaic_unc.fits): The output uncertainty mosaic.
Mosaic Standard Deviation File (mosaic_std.fits): The output standard deviation mosaic.
Mosaic coverage File (mosaic_cov.fits): The output coverage mosaic.
DISCUSSION
After module Mosaic Coadder produces individual tiles, this module stitches together all tiles into a big mosaic. Even if the coaddition was done in a single tile, this module must still be run in order to produce the expected outputs.Not all of the output files above will be produced by Mosaic Combine. Many will only be produced if requested in the namelist options.
This module is only required in the APEX flow when running APEX Multiframe (apex.pl). If a mosaic has previously been created using mosaic.pl then this module can be dropped from the apex.pl flow, and the mosaicking results used as input instead. Note that the APEX pipeline does not carry out any outlier rejection when combining the input images into a mosaic. In order to use an outlier rejection scheme, you must run mosaic.pl and use the output from Mosaic as input into APEX. To do this, you must do the following: 1) run mosaic.pl with the namelist keyword kee_coadded_tiles = 1. This will keep the coadded files for input into APEX. 2) copy the coadded tile files from the Mosaic output directory into the APEX output directory. 3) turn off the mosaicking modules within the APEX namelist (i.e. Fiducial Image Frame, Mosaic Interpolate, Mosaic Coadder and Mosaic Combine). APEX will automatically pick up the coadded tiles from the APEX output directory and use them as input. .
| Contents | ~ | Previous: APEX Modules - Mosaic Coadder | ~ | Next: APEX Modules - Detect MedFilter |
