MOPEX User's Guide - IRSA

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MOPEX User’s Guide Note that you must have checked the Keep coadded Tiles box in the Mosaic CoAdder module in the Mosaic pipeline. PURPOSE The interpolated images are co-added to create one mosaic image. The pixel values of the mosaic image are equal to the averaged interpolated pixel values. The interpolated uncertainty images are also co-added into one uncertainty mosaic image following the standard assumption of additive variances. The coverage maps are co-added into a single mosaic coverage map. INPUT Tile Max X, Y: (int) The X (Y)-size of the tile for performing the co-addition. This should be reduced if computer memory is an issue (see §8.1). Integration Time Weighted Coadd: Check this box to weight the coaddition by exposure time. MOPEX searches for the header keyword specified, the default is EXPTIME. Mosaic Co-Adder output subdirectory: The subdirectory of that you wish to use for the output files. Default is Coadd-apex. COMMAND LINE INPUT &MOSAICCOADDIN TILEMAX_X = 1000, TILEMAX_Y = 1000, INTEG_TIME_KWD = ‘EXPTIME’, &END In Global Parameters: COADDER_DIR = Coadd-apex INTEG_TIME_KWD: This is the equivalent of checking the Integration Time Weighted Coadd box in the GUI. If INTEG_TIME_KWD = ‘EXPTIME’ is set in the parameter block, intergration time weighted coadd will be used. OUTPUT Point Source Extraction (APEX) 122 APEX Modules
MOPEX User’s Guide Tile BCD file (coadd_tile_bcd.txt): This text file lists the input images which contribute to each output tile. The format of the file is the tile ID, the number of contributing images, and the image index within the stack. Tile table (coadd_tiles.tbl): A table listing the tiles, their sizes, and their offsets in the x- and y-directions with respect to the FIF. Tile uncertainty list (coadd_Tile_*_Unc.fits): The stack of tiled uncertainty images. Mosaic uncertainty file (coadd_Tile_*_Std_Unc.fits): The stack of tiled standard deviation images. DISCUSSION If the APEX pipeline is appended to a Mosaic pipeline, and you intend to use the mosaic.fits file from Mosaic as input into APEX, this module should be omitted from the flow. Note that you must have checked the Keep coadded Tiles box in the Mosaic CoAdder module in the Mosaic pipeline. The co-addition can be performed on Tiles (see §8.1), to address computer memory considerations. The Mosaic CoAdder module performs the co-addition on the individual tiles, and the Mosaic Combine module then combines the tiles into a single mosaic. Even if only a single tile is used, Mosaic Combine still needs to be run, in order to produce the expected products. There are only two weighting schemes available in the APEX version of this module. The interpolated images can be combined using the straight averaging or they can be weighted by exposure time. The co-added uncertainty image is computed, as long as the uncertainty images are given as an input to the program. Straight Average: (default) If none of the weighting alternatives are selected, then the coadded pixel value O is given by the following expression: O = ∑ j c jI j Point Source Extraction (APEX) 123 APEX Modules C Equation 6.3
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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 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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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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