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HRS pipeline specifications for reduction and data quality

Steve Crawford edited this page Jul 14, 2016 · 2 revisions

These are the specification for the reduction of HRS observations for the pipeline. This includes data quality measurements as well as reducing and distribution calibration and observational data.

Bias Reductions

  • Median Combine biases
  • Upload background levels to sdb
  • Upload overscan level to sdb
  • Copy master bias to calibration directory

Flat Reductions

  • Subtract master bias
  • Median Combine flats
  • Upload background levels to sdb
  • Upload overscan level to sdb
  • Create Order frame
  • Upload order positions to sdb
  • Copy master flat to calibration directory

Arc Reductions

  • Subtract master bias
  • Median Combine arcs
  • Extract object fiber
  • Extract target fiber
  • Upload background levels to sdb
  • Upload overscan level to sdb
  • Identify/match lines in each order
  • Upload match lines to sdb
  • Calculate 2D Wavelength solution
  • Copyw wavelength to calibration directory

Science Reductions

  • Subtract master bias
  • Apply flat correction
  • Upload background levels to sdb
  • Upload overscan level to sdb
  • Extract object fiber
  • Extract target fiber
  • Normalize extracted spectra
  • Subtract sky from extracted spectra
  • Stitch spctra together
  • Apply Wavelength solution
  • Vacuum to air correction
  • heliocentric correction

Radial Velocity Reductions

Spectrophotometric Standard reductions

Questions/Improvements

  • Is subtracting off the master bias sufficient to correct overscan levels?
  • The extraction needs to be improved.