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LABOCA Zenith opacities

LABOCA zenith opacities as a function of time. For each entry in the output table, we provide three values for the zenith opacity:
  • tau_sd, derived by reducing a Skydip scan with redsky(scannr).
  • tau_rm, computed from the precipitable water vapour (PWV) and an atmospheric model.
  • A linear combination of these two: tau_mean = (1.3*tau_sd + 0.9*tau_rm)/2.0
The latter usually provides the best estimate of the true zenith opacity; but users are strongly encouraged to carefully and critically check all these values and their variations during the time interval covering their science observations.
Download all opacities (BoA format) which is generated automatically using a pipeline reduction.
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