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DES Photoz WG discussion topics

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Compare/optimize photo-z codes from interested groups. Finally test neural network photo-z module (from DC1) ... Data Challenge 4 (DC4) and Photo-z WG. 2 ... – PowerPoint PPT presentation

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Title: DES Photoz WG discussion topics


1
Data Challenge 4 (DC4) and Photo-z WG
  • DESDM Portal testing
  • Huan Lin and Francisco Castander current
    volunteers anyone else?
  • DC4 Photo-z WG analysis plans
  • Science images 150 deg2 x 5 filters x (6-15)
    tilings 2600 images 2.6 TB
  • Number of tilings 8 each in g,r, 15 each in i,z,
    and 6 in Y
  • Access (coadd) catalog data via DESDM portal
  • Compare/optimize photo-z codes from interested
    groups
  • Finally test neural network photo-z module (from
    DC1)?
  • Would need re-training and probably also updating
    to fit into current processing framework

2
Survey Strategy Options and Photo-z WG
  • Photo-z WG tasked with providing photo-z accuracy
    estimates for different survey strategy options
  • Need galaxy catalog simulations for different
    options
  • Then need photo-z computations for those
    simulations

3
Training Set Completeness
  • Assess completeness of faint training sets like
    VVDS and DEEP2
  • Galaxy angular cross correlation as handle on
    redshift distributions
  • Possibilities for obtaining more complete
    training set samples using telescope resources
    within DES collaboration
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