MOPEX User's Guide - IRSA

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MOPEX User’s Guide Reinterpolate, Mosaic Coadd and Mosaic Combine, and re-running Mosaic (mosaic.pl) with different RMask Fatal Mask Bit Pattern settings. You can also adjust the thresholds for some of the outlier schemes within RMask itself. Since the outlier rejection modules are among the most complex steps, this can save a lot of time, especially for large datasets. The module Mosaic Coverage is run prior to Mosaic RMask, because the latter uses coverage thresholds to include the results of the temporal and dual outlier detection. 8.2.1 Single Frame Outlier Rejection The single frame radhit detection represents spatial filtering of input images. It is implemented in the Detect Radhit module. It is a variant of image segmentation and is based on the idea that when a relatively low detection threshold is applied, for each bright point source a large number of pixels will be detected above the threshold. Bright detections with small areas are, therefore, classified as radhits. It should be applied to background subtracted images. Figure 8.2: Cartoon of single-frame outlier detection. It has three input parameters: Segmentation Threshold, Detection Max Area, and Radhit Threshold. It performs image segmentation based on a low threshold Segmentation Threshold and then applies two conditions to weed out point sources. The first condition is that the total area in pixels should be no greater than a user specified Detection Max Area. The second condition is that at least one pixel in the cluster should be greater than another user specified Radhit Threshold, which should be set much higher than Segmentation Threshold. Basic Concepts in MOPEX 182 Out lier Det ect ion
MOPEX User’s Guide Figure 8.3: An illustration of how Detect Radhit selects a radhit over two point sources. Figure 8.3 illustrates the above algorithm. The three objects depicted there are a bright point source, a faint point source, and a radhit. After segmentation with a low Segmentation Threshold is performed, the bright point source creates a cluster of pixels with the number of pixels greater than Detection Max Area. Then the second criterion of having at least one pixel greater than Radhit Threshold weeds out the faint point source. 8.2.2 MultiFrame Temporal Outlier Detection Figure 8.4: Cartoon of temporal outlier detection. Basic Concepts in MOPEX 183 Out lier Det ect ion
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MOPEX User’s Guide MOsaicking and
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MOPEX User’s Guide Chapter 4. Ove
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MOPEX User’s Guide 7.4 PRF Estima
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Chapter 1. Introduction MOPEX User
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MOPEX User’s Guide • If you are
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for Linux and Solaris systems, and:
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Chapter 2. Overview of MOPEX MOPEX
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For instructions on how to run MOPE
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2.3.1 Additional Functionality MOPE
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MOPEX User’s Guide mosaic_mask.pl
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MOPEX User’s Guide Choosing the r
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MOPEX User’s Guide photometry), o
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Chapter 3. MOPEX Input MOPEX User
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3.2 MOPEX Input List Files MOPEX Us
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Chapter 4. Overlap (overlap.pl) MOP
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MOPEX User’s Guide 3. Background
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MOPEX User’s Guide Output Directo
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ncpu_multiprocess = 1 default = 1 I
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4.3.3 Overlap Modules: S/N Estimato
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σ = σ 2 readnoise g 2 + σ 2 conf
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MOPEX User’s Guide Generated Head
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OUTPUT MOPEX User’s Guide Generat
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OUTPUT MOPEX User’s Guide Generat
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MOPEX User’s Guide When choosing
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MOPEX User’s Guide offsets and th
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Chapter 5. Mosaicking (mosaic.pl) M
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MOPEX User’s Guide They do not ne
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MOPEX User’s Guide interpolated u
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MOPEX User’s Guide more informati
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MOPEX User’s Guide Pixel by Size:
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OUTPUT None DISCUSSION MOPEX User
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MOPEX User’s Guide This module al
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MOPEX User’s Guide negative numbe
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DISCUSSION MOPEX User’s Guide For
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MOPEX User’s Guide then interpola
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MOPEX User’s Guide This module pe
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DISCUSSION MOPEX User’s Guide Mos
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PURPOSE MOPEX User’s Guide This m
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DISCUSSION No further information.
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MOPEX User’s Guide processed in o
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MOPEX User’s Guide Min Pix Number
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MOPEX User’s Guide Box Median Bia
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MOPEX User’s Guide If coverage >=
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MOPEX User’s Guide Refine Outlier
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MOPEX User’s Guide Reinterpolatio
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PURPOSE MOPEX User’s Guide The in
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MOPEX User’s Guide The tile speci
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MOPEX User’s Guide Standard Devia
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Mosaic Coverage File (mosaic_cov.fi
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There are no user-defined input par
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COMMAND LINE INPUT See INPUT. OUTPU
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MOPEX User’s Guide limitations di
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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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9.7.4 Single-frame mode (apex_1fram
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MOPEX User’s Guide Table 9.6: Lis
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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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