MOPEX User's Guide - IRSA

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MOPEX User’s Guide Apply Overlap Correction: Apply the calculated offsets to the BCD images to create the new background-corrected images. COMMAND LINE INPUT &COMPUTEOVRLAPCORRIN TOP_THRESHOLD = 3, BOTTOM_THRESHOLD = 3, MIN_IMG_NUM = 4, WEIGHT = 0.0, &END WEIGHT: (float; command line only) Determines the overall level that the frames should be corrected to. In the first method (WEIGHT = 0.0, the default), it determines the overall level after finding the offsets, by forcing the sum of the offsets of all the images to add up to 0. In the second method (nominally WEIGHT = 1.0), it minimizes the squared offsets as part of the origina l minimization. See §4.1 Background Matching Overview for more information. OUTPUT Overlap Correction Table (offsets.tbl): A table of calculated offsets for each input DCE is the primary output of the Overlap flow. Corrected Images (overlapCorrection_*.fits): If Apply Overlap Correction is turned on, a new FITS stack is output, with the background-matching offsets applied. These outputs are written to the Overlap_corr subdirectory. DISCUSSION The background matching algorithm (see §8.5) calculates an offset to apply to each image in order to set their backgrounds to a constant value. After the initial calculation, the offsets are examined, and outliers are rejected, as long as the minimum number of images are present. The other inputs to this module control how much of an outlier an offset has to be in order to be rejected. A rejected outlier will not be used in determining the overall offset level for all frames, but will still be applied to the corresponding data frame to bring the background to the same offset as the other input frames. The offsets and their uncertainties are written in the header of the corresponding output FITS files. The keywords are OVRLPDC and OVRLPDCD. They keyword OVRLPOUT is set to 1 if the offset was determined to be an outlier. A table, offset.tbl, is also created, containing the Overlap (overlap.pl) 42 Overlap Modules
MOPEX User’s Guide offsets and their uncertainties for all the files. The “outliers” column is used to indicate whether the offset in that row was determined to be an outlier. Below is a sample output table : |Image_id| Offset | del_Offset | outliers | | int | real | real | int | 1 0.13305403 0.00988516 1 2 0.09888604 0.00963296 0 3 0.01376509 0.00964912 0 4.3.9 Overlap Modules: Quicklook Mosaic Command Line Equivalent: mosaic_corrected_images Default Output Directory: De pe nds On: Initial Settings; Mosaic Interpolate Important Notes: The mosaic produced by this module should only be used for checking the results of the Background Matching. Do not use it for scie nce. To create a science-quality mosaic, use the Mosaic pipeline. PURPOSE This module produces a quick mosaic of the interpolated, overlap-corrected images produced during the Overlap pipe line. INPUT Mosaic CoAdder: TILEMAX_X, TILEMAX_Y: (int) The size of output Tiles (see §8.1) can be specified. For small mosaics, these numbers should be larger than the expected output size to avoid tiling. COMMAND LINE INPUT &MOSAICCOADDIN TILEMAX_X = 2000, TILEMAX_Y = 2000, &END Overlap (overlap.pl) 43 Overlap Modules
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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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&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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MOPEX User’s Guide is recorded as
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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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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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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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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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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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8.9.3 Aperture Uncertainties MOPEX
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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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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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