MOPEX User's Guide - IRSA

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MOPEX User’s Guide Here Ij is the value of the interpolated pixel in image j, and cj is the pixe l value of the corresponding coverage map. Co-added uncertainty U = W-1 is given by the following expression: ⎛ W= ⎜ ⎝ ∑ c j 2 σ j Point Source Extraction (APEX) 124 APEX Modules j ⎞ ⎟ ⎠ Equation 6.4 where σj is the pixel value of the corresponding uncertainty image, and co-added coverage C is simply the sum of the individual input coverages: ∑ C = c j j Equation 6.5 Exposure Time Weighted Average: If Integration Time Weighted Coadd is selected then MOPEX weights the co-added pixels by the exposure time given in the fits header keyword specified. For Spitzer data, the integration time is given by the keyword EXPTIME. 6.5.8 APEX Modules: Detect MedFilter Command Line Equivalent: run_detect_medfilter Default Output Directory: /Medfilter-apex De pe nds On: Mosaic Interpolate Relevant Pipelines: All PURPOSE This module is an instance of the same MedFilter that is run during outlier rejection in the Mosaic pipeline. In this case, it performs the background subtraction of the mosaicked image (or tiles), which will be used for source detection. There are two options - the Median case (default) and the Sbkg case, which uses a background estimate like that of SExtractor. INPUT
MOPEX User’s Guide Window X, Y: (int) the X, Y size in input pixels of the window used to compute the background value. Outlie rs / Window: (int) the number of high outlier pixels rejected from the X*Y window when computing the Median background. For a very crowded field, the fraction of rejected pixels should be higher than for a less crowded field. Values of a few percent should be acceptable for uncrowded fields. If Outliers / Window is set too high, the background will be under-estimated. Min Good Pixels in Window: (int) The minimum number of good (non-NaN, non-masked) pixels needed to compute the median. This parameter should generally not need to be adjusted. If insufficient good pixels are present, the background is recorded as "missing" and the "missing" output pixel is replaced by interpolation of its neighbors if possible. Min Good Neighbors Number: (int) The minimum number of good neighbor pixels needed to perform the replacement of "missing" output pixels. This parameter should generally not need to be adjusted. Use SExtractor background estimation: (int) A value of 1 invokes the Sbkg background estimate based on SExtractor. Any other value gives the default Median estimate. SExtractor background filter size: (int) Median filter box size for the Panels when this option is set. A value less than 2 means no filtering. If greater than the minimum number of panels across an image, it will use the minimum. Med Filter output subdirectory: The subdirectory of that you wish to use for the output files. Default is Medfilter-apex. COMMAND LINE INPUT &DETECT_MEDFILTER Window_X = 45, Window_Y = 45, N_Outliers_Per_Window = 50, Min_Good_Pixels_In_Window = 9, Min_GoodNeighbors_Number = 4, Max_Bad_Pixels_OutputImage = 100, Sbkg_Filt_Size_for_Med = 1, Use_Sbkg_for_Med = 1, &END In Global Parameters: Point Source Extraction (APEX) 125 APEX Modules
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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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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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MOPEX User’s Guide USE_DUAL_OUTLI
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MOPEX User’s Guide Figure 8.9: As
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MOPEX User’s Guide Important: Usi
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MOPEX User’s Guide Figure 8.12: T
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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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MOPEX User’s Guide Figure 8.18: 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 Figure 8.22: P
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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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MOPEX User’s Guide In particular
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8.9.3 Aperture Uncertainties MOPEX
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MOPEX User’s Guide e.g. if you wi
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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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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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MOPEX User's Guide - IRSA

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