LO Doppler Tracking Issue

Data taken with the GBT during the period

March 13th, 2023 @18:00 ET – May 25th, 2023

were not corrected properly for doppler tracking in the barycentric and LSR frames.

The main issue has been fixed. If you observed using the topocentric frame for your data (i.e. vframe=’topo’ in your configuration), then you do not need to be concerned about this issue.

However, for any other frame, data taken during that period have almost certainly been incorrectly adjusted for the motion of the Earth/Solar system. We are working on a software fix to retroactively repair your affected data. Please wait for us to contact you again before using your data for any publications or general analysis.

Feel free to contact your project friend if you have any questions.

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