I have a list of images covering a big area on the sky, but I only want to male a mosaic covering a small portion of that area. How can I do it?
A. First, create the fiducial image frame based on the full list. In order to do so, run mosaic.pl with only one step set to 1 in the namelist: run_fiducial_image_frame = 1 This will create FIF.tbl. Now, set run_fiducial_image_frame = 0. Modify FIF.tbl to specify the reduced field, then run mosaic.pl with the following setting: run_mosaic_geom = 1 Specify all the pertinent input lists in the namelists. For each input list there will be a corresponding reduced list created in the output directory (OUTPUT_DIR). The lists will contain only the images that have some overlap with the image frame specified in the modified FIF.tbl. E.g. if you have the following setting in your namelist: OUTPUT_DIR = mosaic IMAGE_STACK_FILE_NAME = data/MIPS70_ImageList.txt DCE_STATUS_MASK_LIST = DmaskList.txt After you run mosaic.pl there will be two lists created: mosaic/geom_MIPS70_ImageList.txt mosaic/geom_DmaskList.txt Set run_mosaic_geom = 0. Now use the reduced lists in the namelist: IMAGE_STACK_FILE_NA
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