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Last modified: 07/24/16

CXC/ACIS Operations

Welcome to our home page. ACIS, the Advanced CCD Imaging Spectrometer, is an instrument built by a team of scientists and engineers from the Massachusetts Institute of Technology's Center for Space Research and the Pennsylvania State University for the Chandra X-Ray Observatory. ACIS shares the Chandra focal plane with the High Resolution Camera. However, what you will find here is contact information and other resources relevant to the Chandra X-ray Observatory Center (CXC) ACIS Operations team members.

ACIS Operations Scientist On-Duty Schedule

Please consult the following table to determine the ACIS Operations scientist on-duty to contact for mission planning purposes or spacecraft emergencies:


Week Of Scientist Work Cell
Jul 18 - Jul 24 Gregg Germain 6-1558 617-785-0976
Jul 25 - Jul 31 Richard Edgar 6-1816 781-708-5004
Aug 1 - Aug 7 John ZuHone 5-7249 617-866-8615
Aug 8 - Aug 14 Catherine Grant 253-0797 617-584-2686
Aug 15 - Aug 21 Paul Plucinsky 6-7726 617-721-4366
Aug 22 - Aug 28 Gregg Germain 6-1558 617-785-0976
Aug 29 - Sep 4 John ZuHone 5-7249 617-866-8615
Sep 5 - Sep 11 Richard Edgar 6-1816 781-708-5004
Sep 12 - Sep 18 Catherine Grant 253-0797 617-584-2686
Sep 19 - Sep 25 Gregg Germain 6-1558 617-785-0976
Sep 26 - Oct 2 Richard Edgar 5-7249 617-866-8615
Oct 3 - Oct 9 John ZuHone 6-1816 781-708-5004
Oct 10 - Oct 16 Catherine Grant 253-0797 617-584-2686
Oct 17 - Oct 23 Paul Plucinsky 6-7726 617-721-4366


The first highlighted name is responsible for Load Reviews and any real-time commanding. The second highlighted name is responsible for SW command packet/PB generation and SI-MODE allocations (via the USINT web pages).

Contact and Leave Information

Operations Memos, Documents and Links

ACIS Thermal Models

ACIS Procedures


ACIS Orbital Fluence

Real-Time Telemetry Links

Current MP Schedules


Shift Reports

Related ACIS and Chandra Web Sites:

Solar Cycle Info
Solar Cycle data and predictions

Web Page Maintained by:
Gregg Germain, Paul Plucinsky, Richard Edgar, & Royce Buehler
(Please feel free to send us any comments or suggestions!)

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory.
60 Garden Street, Cambridge, MA 02138 USA.    Email: cxcweb@head.cfa.harvard.edu
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