IPMG: STIS Calibration Enhancement

Optimizing Methods to Centroid
Wavelength Calibration Lines

  • Summary: In order for the model based wavelength calibration to work automatically, the methods for centroiding the wevelength calibration lines in noisy exposures have to be optimized. This translates into a project to literature survey of algorithms and the testing of various options on real life emission line images with few to very few counts. We have included a very robust method after careful comparison into the working version of the STIS-CE wavelength calibration part.
  • Documentation:
    -ADASS 2003.1 Evaluation of Methods to Locate Emission Lines from Calibration Lamps in 2D Spectroscopic Data (.ppt)

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