About Chandra Archive Proposer Instruments & Calibration Newsletters Data Analysis HelpDesk Calibration Database NASA Archives & Centers Chandra Science Links

Last modified: 02/29/24

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
Feb 26 - Mar 3 Gregg Germain 6-1558 617-785-0976
Mar 4 - Mar 10 Jack Steiner 6-7988 617-680-9306
Mar 11 - Mar 17 Gregg Germain 6-1558 617-785-0976
Mar 18 - Mar 24 John ZuHone 6-1816 781-708-5004
Mar 25 - Mar 31 Catherine Grant 617-253-0797 617-584-2686
Apr 1 - Apr 7 John ZuHone 6-1816 781-708-5004
Apr 8 - Apr 14 Gregg Germain 6-1558 617-785-0976
Apr 15 - Apr 21 Jim Francis 617-258-8258 774-270-2359
Apr 22 - Apr 28 Jack Steiner 6-7988 617-680-9306
Apr 29 - May 5 Paul Plucinsky 6-7726 617-721-4366

Contact and Leave Information

Operations Memos, Documents and Links

Non-Load Event Tracking

ACIS Thermal

ACIS Procedures


ACIS Orbital Fluence

EPHIN Orbit Thresholds

Real-Time Telemetry Links

Current MP Schedules


Shift Reports

Related ACIS and Chandra Web Sites:

Solar Cycle Info
Solar Cycle data and predictions

Solar Cycle 25 prediction article

Spacecraft Configuration and Constants

IP&CL - P014

Latest IP&CL - P015

Web Page Maintained by:
Gregg Germain, Paul Plucinsky, John ZuHone, & Jack Steiner
(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
Smithsonian Institution, Copyright © 1998-2004. All rights reserved.