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 Assembly Sequence

September 2004
ACD structure, with tile flexures and instrumentation.

ACD structure, with tile flexures and instrumentation.

October 2004
Ribbons and top tiles installed.

Ribbons and top tiles installed.

November 2004
Top of ACD with one tile removed to show ribbons and light-transmission fibers.

Top of ACD with one tile removed to show ribbons and light-transmission fibers.

January 2005
First side row of tiles installed.

First side row of tiles installed.

February 2005
Second side row of tiles installed.

Second side row of tiles installed.

May 2005
Third row of tiles and electronics chassis installed.

Third row of tiles and electronics chassis installed.

June 2005
Bottom tiles installed.

Bottom tiles installed.