The HEASARC welcomes your participation in a brief survey to capture how users access and utilize HEASARC data, software, and services. The outcome(s) of this survey will be used to guide, prioritize, and plan our activities and development in the coming years. It contains 18 questions, generally takes just a few minutes to complete, and your answers will remain totally anonymous. We thank you in advance for your valuable feedback.
Fermi Gamma-ray Space Telescope
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ACD Electronics Chassis

ACD Electronics Chassis

This is the first flight electronics chassis, which will be used for qualification. The High Voltage Bias Supplies and Front End Electronics cards are in place, waiting for the phototubes. The box is the chassis storage/transportation box, which protects the chassis and includes a purge fixture for keeping the phototubes in a low-helium environment.