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Changes between Version 21 and Version 22 of ZoologyCrossmatching


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Timestamp:
Sep 2, 2011, 3:47:14 PM (15 years ago)
Author:
rhenders
Comment:

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  • ZoologyCrossmatching

    v21 v22  
    55
    66This page outlines an investigation into the cross-matching used by the Durham group to generate the 'true positives' and 'false positives' data subsets. Durham used TOPCAT to perform the cross-match, and presented the results as FITS files. Our aim is to reproduce the same results as Durham then experiment with different cross-matching parameters.
     7
     8= Coverage =
     9
     10As can be seenfrom the plot below, Sloan stripe 82 does not fully cover the SAS footprint. This needs to be taken into account when performing crossmatching and determining false positives.
     11
     12[[Image(coverage.gif, 500px)]]
    713
    814= Durham-supplied data =
     
    2329|| footprint-z-not-matched-psphot.fits.bz2|| 51,391|| all IPP false detections in y ||
    2430
    25 = Coverage =
    26 
    27 As can be seenfrom the plot below, Sloan stripe 82 does not fully cover the SAS footprint. This needs to be taken into account when performing crossmatching and determining false positives.
    28 
    29 [[Image(coverage.gif)]]
    3031
    3132= Durham method =