Astronomy Hours
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VLA telescope time by category. Scheduled is the time planned for science observations. Observing is the time actually spent on science observing. Downtime is the amount of antenna time lost due to unforeseen circumstances, including weather, equipment failures, and software failures. Maintenance is time spent on maintenance activities. Test is time spent on testing and calibration. Unscheduled is the time not scheduled for observing or any other activities. Shutdown is the time spent in planned shutdown. VLASS is the time spent observing for the VLA Sky Survey. |
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| ALMA telescope time by category. Observing is the time actually spent on science observing. All other telescope time is categorized as “Other”. Work is underway to extract from the ALMA archive telescope time information using categories similar to those shown in Figure 2.4.1.1. |  |
