MOPEX User's Guide - IRSA

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COMMAND LINE INPUT &DETECT Input_Type = 'image_input', Output_Type = "centroids_only_output", Detection_Max_Area = 5, Detection_Min_Area = 2, Detection_Threshold = 10, Threshold_Type = 'combo', Extended_Object_Area = 500, Minimum_Coverage = 1.8, Complete_Table_Out_Filename = "completeout.tbl", &END MOPEX User’s Guide if Input_Type = "snr_input" then you must also include the following parameter block. N_Outliers_Per_Window must be set to 0: &PSP_GAUSSNOISE Window_X = 45, Window_Y = 45, N_Outliers_Per_Window = 0, &END OUTPUT Table (mosaic_detect.tbl): In Single Frame mode there is one detection list produced in this step. In Multiframe mode, the detection is performed for each co-added tile. The detection lists for each tile (i.e. each spatial area) are merged into one detection list for the full area. For each source, the output table of detected sources lists: • the source ID • the position (X, Y in pixels) • a rough "flux" estimate (the peak pixel value, in the same units as the input image), • BlendId: keeps track of the sequential number of a detection blend in the table. • BlendSize: gives the number of detections in the blend. Additional Output Images: Other images can be output if specified: Complete table (has all detected pixels), FITS Output (image of highest detected pixels), Mask Output (image with all detected pixels marked with highest segmentation level), Peaks Image (image with peak Point Source Extraction (APEX) 136 APEX Modules
MOPEX User’s Guide pixels set to 1), Number Cluster Image (pixels above last threshold marked with cluster number). Detection Image: The image used for detection (input or SNR, for example) can be displayed. DISCUSSION The Detect module performs image segmentation and computes the centroids for the detected pixel clusters. Detected sources are written to two identical tables (mosaic_detect.tbl and mosaic_detect_raw.tbl). The output table may be filtered on certain criteria using the Select Detect module , in which case the "raw" table is retained and other is overwritten. Input Image Type: The input to this module depends on the Detect parameter Input Type and the APEX Settings parameters Use PSP to Detect. In addition, the APEX Settings parameters Use Uncertainty to Detect and Use Standard Deviation to Detect affect the output of the Point Source Probability module, and therefore the type of PSP image that is used as input into this module. The table below gives the type of image that will be used for segmentation. The "Filtered" image mentioned in the table is defined as the product of the PSF image times the background subtracted image (see §6.5.9 APEX Modules: Point Source Probability for more information). Table 6.1: Resultant input image to module Detect depending on the values of Use PSP to Detect and Input Type. Use PSP to Detect Input Type Resultant Input Image Background subtracted input image (= 2 on the command line) Background subtracted input image (= 2 on the command line) PSP image (= 1 on the command line; default) PSP image (= 1 on the command line; default) Filtered image (= 0 on the command line) SNR input SNR image based on the background subtracted input image Image input Background subtracted input image SNR input SNR image based on the Point Source Probability image Image input Point Source Probability image SNR input SNR image based on the Filtered image Point Source Extraction (APEX) 137 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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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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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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