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GBT Observer Alert
Computing Machines Unavailable
We are updating the power distribution and cabling for 5 computing racks in our equipment room. The work will start on Wednesday July 16, 2025 at 8:30 am ET and continue until completed.
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GBT Observer Alert
Data Storage Work
The Green Bank Observatory is in the process of expanding the storage capacity on one of our data storage machines. The work starts Monday, July 14 at 16:00 ET and will continue until all data is successfully restored.
Past Notifications
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GBT at Full azimuth Slew Rate
The GBT has returned to the regular full azimuth slew rate.
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RH8 UPGRADE COMPLETE
The Green Bank Observatory has finished the process of upgrading to Red Hat 8 (RH8). Observations can again be done with either machine Ariel or Titania!
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Ku-Band TCal values updated
The default TCal values used for standard calibration have been updated for the Ku-Band receiver.
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GBT at 3/4 azimuth Slew Rate
Three more azimuth wheels have been replaced during this summer maintenance period. Wheel inspection shows no advanced signs of fatigue in the remaining wheels. The restriction to 1/2 azimuth slew rate has been lifted and the GBT is now moving at 3/4 azimuth slew rate.
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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.
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FastX Upgrade
We encourage all observers to test the new installation prior to your observations.