MOPEX User's Guide - IRSA

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MOPEX User’s Guide hand. If you have previously added and deleted a Mosaic pipeline from a particular flow, the last option will instead read Re-add Pipeline. For information on how to run Mosaic on the command line, see Chapter 9. 5.3 Mosaicking a Portion of the Total FIF If you have a list of images covering a large area of the sky, but only wish to make a mosaic covering a small portion, you can use the Mosaic Geometry module. This module can take a usersupplied FIF, along with the full lists of input images, and create lists of only those images that fall within the FIF area. To create a modified FIF and run Mosaic Geometry: 1. Create the Fiducial Image Frame based on the full input list of images. To do this, run Mosaic with only the Fiducial Image Frame activated in the namelist. This will create the FIF.tbl file that specifies the spatial boundaries of all of your input frames. 2. Open FIF.tbl in a text editor, and modify it to cover only the spatial area that you wish to mosaic. For example, the initia l FIF.tbl format is as follows: \char comment = Output from fiducial_image_frame, version 1.4 \char Date-Time = Mar 12, 2012, 09:21:44 \real CRVAL1 = 329.129598 \real CRVAL2 = 64.662007 \real CRPIX1 = 264.50 \real CRPIX2 = 382.50 \real CROTA2 = -71.01896 \real CDELT1 = -3.39817E-04 \real CDELT2 = -3.39801E-04 \int NAXIS1 = 528 \int NAXIS2 = 764 \int EQUINOX = 2000 \char PROJTYPE = TAN \char COORDINATE_SYSTEM = J2000 \char CTYPE1 = RA---TAN \char CTYPE2 = DEC—TAN \real EXTENT_X = 0.179423 \real EXTENT_Y = 0.259608 These are standard FITS header keywords for the most part. The EXTENT_X and EXTENT_Y keywords are sizes (in degrees) of the nominal mosaic frame if the default pixel scale is used. Mosaicking (mosaic.pl) 46 Mosaicking a Portion of the Total FIF
MOPEX User’s Guide They do not necessarily reflect the size of final mosaic as the pixel size sent to Mosaic Interpolate can be different. They can be ignored. This file can be edited to produce a sub-mosaic at the center with a size of 100 by 100 default pixels and orientation of -45.0 deg E of N by changing the following lines: \real CROTA2 = -45.0 \real CRPIX1 = 50.5 \real CRPIX2 = 50.5 \int NAXIS1 = 100 \int NAXIS2 = 100 3. Re-run Mosaic but this time with the following settings: • In the Initia l Settings, specify the name of the new FIF file as input; • Remove the Fiducial Image Frame module from the pipeline to prevent it overwriting the new FIF; • Include the Mosaic Geometry module in the pipeline; The Mosaic Geometry module will create new lists of the input data, uncertainty and mask files that cross the modified FIF, and will pass those lists on to the subsequent modules in the Mosaic flow. The new lists are saved as geom_*.txt. (Insertion of Mosaic Geometry is not required to make a mosaic, but creates the lists and shortens subsequent tasks to the shorter list.) Mosaicking to an alternate FIF from, for example, another dataset, just requires step 3 above. 5.4 Creating a Mosaic of a Moving Object This functionality is limited to Spitzer data. Some Spitzer observations are designed for moving targets, such as comets or asteroids. Moving target coordinates are written in the input image header with the keywords RA_REF and DEC_REF. The keywords are written in the headers of all input images, regardless of whether the moving object is present in the frame. MOPEX can create a mosaic in the rest frame of the moving object by setting the Moving Object Mosaic value in the Mosaic Settings module. On the command line, you should set the parameter MOVING_OBJECT_MOSAIC in the General Settings section. The value specifies the frame Mosaicking (mosaic.pl) 47 Creating a Mosaic of a Moving Object
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6.3 Running APEX MOPEX User’s Gui
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MOPEX User’s Guide Point Source D
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Figure 6.1: Overview of the main pr
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Relevant Pipelines: All PURPOSE INP
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NICE = 1 save_namelist = 1 MOPEX Us
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MOPEX User’s Guide Mosaic PRF Fil
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create_unc_mosaic = 1 use_std_to_de
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MOPEX User’s Guide Use Refined Po
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MOPEX User’s Guide Here FLUXCONV
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MOPEX User’s Guide This module cr
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MOPEX User’s Guide year) and with
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MOPEX User’s Guide Mosaic FIF Tab
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MOPEX User’s Guide Tile BCD file
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MOPEX User’s Guide Window X, Y: (
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MOPEX User’s Guide neighboring pi
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⎛ ⎜ ⎜ P( j) = ⎜ 1+ ⎜ ⎜
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&END MOPEX User’s Guide if use_ps
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MOPEX User’s Guide \float Tile_Of
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MOPEX User’s Guide This module co
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&END OUTPUT MOPEX User’s Guide Th
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INPUT Columns selection: MOPEX User
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PURPOSE MOPEX User’s Guide Fits t
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MOPEX User’s Guide given below. O
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6.5.19 APEX Modules: Aperture Photo
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MOPEX User’s Guide This module al
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Condition Builder: Some simple sele
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MOPEX User’s Guide Fatal Mask Bit
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MOPEX User’s Guide Pixel by Size:
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MOPEX User’s Guide Mosaic PRF Fil
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PRF_ResampleX_Factor = 100, PRF_Res
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7.3 Running PRF Estimate MOPEX User
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MOPEX User’s Guide 3. Outlier Rej
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PURPOSE MOPEX User’s Guide Set up
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MOPEX User’s Guide Most users wil
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DISCUSSION MOPEX User’s Guide Wit
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7.5.5 PRF Estimate Modules: Split B
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MOPEX User’s Guide Fit Seed: (int
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Chapter 8. Basic Concepts in MOPEX
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8.2 Outlier Detection MOPEX User’
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MOPEX User’s Guide Figure 8.3: An
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MOPEX User’s Guide Two ways to es
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8.3.2 Thresholding MOPEX User’s G
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T cl = P min − T min SegLevel MOP
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Centroid _ X = ∑ i∈cluster X(i)
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MOPEX User’s Guide where IPi is t
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8.4.5 Cubic: Bicubic Interpolation
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z n = ∑ r(r≠n ) Onr(I n − Ir
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MOPEX User’s Guide the parameter
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MOPEX User’s Guide that resembles
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∑ AP = a i ⋅ I i MOPEX User’s
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8.9.3 Aperture Uncertainties MOPEX
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MOPEX User’s Guide In order to ru
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MOPEX User’s Guide from the GUI,
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9.4.2.1 Input Files and Output Dire
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MOPEX User’s Guide Table 9.1: Lis
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9.7.2 APEX User List Multiframe (ap
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Appendix A. Full List of MOPEX Scri
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A.1.3 Under Construction Running MO
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Appendix B. Full List of Modules in
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Mosaic Interpolate run_mosaic_int P
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Running MOPEX on the Command Line a
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B.5 PRF Estimate Modules Running MO
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Instrument PRF Samp c Norm Radius (
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Some Tips for MOPEX with Spitzer Da
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