Spectrum Data Model RFC

This document will act as RFC centre for the Spectrum Data Model 1.01 Proposed Recommendation.

Review period: 16 May 2007 to 12 Jun 2007 (still open)

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Comments

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• GaryFuller - 19 Jun 2007
  • Does the model allow for double sideband spectra? That is spectra for which each pixel can correspond to two different frequencies or wavelengths? This is a fairly common situation in the mm and submm.
  • More generally what about the issue of describing how to convert between two different spectral axes, for example in the dsb case the upper and lower sideband frequency?
  • Is there support for non-uniform spectral (and temporal) axes?
  • In derived data fields signal-to-noise ratio seems a poorly defined quantity as it depends on what signal, spectral feature, is of interest to a particular user. A value for the rms noise level on the other hand would be very useful but doesn't seem to be in the model.