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Introduction

The GBT spans a larger range of frequencies than other comparable millimeter/sub-millimeter single-dish telescopes, and is located in a continental, mid-latitude region where weather is dominated by water vapor and small-scale effects. As a result, weather suitable for executing high-frequency observations is at a premium.

To date, the GBT has employed a simple form of dynamic scheduling in which two projects, one high frequency and one low frequency, are scheduled together in two sessions (spaced typically by two days). The high frequency observer is allowed to choose which of the sessions they would like to use. The second is used by the low frequency observer. This scheme often results in high frequency observers receiving little or no time if they wait for truly high frequency weather, which compromises the ability to discharge these projects, and also delays completion of low frequency projects if high frequency observers choose substandard conditions to execute their observations.

An improved scheme, and the accompanying software and hardware for dynamically scheduling science on the GBT is required to make the most efficient use of telescope time, which is in high demand. This is the goal of the GBT Dynamic Scheduling System (DSS).

In addition to improving the observing efficiencies for high frequency observers, the DSS will allow for more flexible use of the GBT. This will benefit both high and low frequency observers in many ways, including:

The main deliverable of the DSS project is the complete adoption of a significantly improved and more efficient dynamic scheduling system for all GBT telescope time. This includes delivery of all the tools necessary to make dynamic scheduling possible. While developing these deliverables, we will strive to keep ease of use high for observers, investigators, and support staff.

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