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Spitzer Warm Mission Transition and Operations

Mahoney, William A. and Garcia, Lisa J. and Hunt, Joseph and McElroy, Douglas B. and Mannings, Vince and Mittman, David S. and O'Linger, JoAnn C. and Sarrel, Marc and Scire, Elena (2010) Spitzer Warm Mission Transition and Operations. In: Observatory operations : strategies, processes, and systems III. Proceedings of SPIE. No.7737. Society of Photo-optical Instrumentation Engineers (SPIE) , Bellingham, WA, Art. No. 77371W. ISBN 978-0-81948-227-3.

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Following the successful dynamic planning and implementation of IRAC Warm Instrument Characterization activities, transition to Spitzer Warm Mission operations has gone smoothly. Operation teams procedures and processes required minimal adaptation and the overall composition of the Mission Operation System retained the same functionality it had during the Cryogenic Mission. While the warm mission scheduling has been simplified because all observations are now being made with a single instrument, several other differences have increased the complexity. The bulk of the observations executed to date have been from ten large Exploration Science programs that, combined, have more complex constraints, more observing requests, and more exo-planet observations with durations of up to 145 hours. Communication with the observatory is also becoming more challenging as the Spitzer DSN antenna allocations have been reduced from two tracking passes per day to a single pass impacting both uplink and downlink activities. While IRAC is now operating with only two channels, the data collection rate is roughly 60% of the four-channel rate leaving a somewhat higher average volume collected between the less frequent passes. Also, the maximum downlink data rate is decreasing as the distance to Spitzer increases requiring longer passes. Nevertheless, with well over 90% of the time spent on science observations, efficiency has equaled or exceeded that achieved during the cryogenic mission.

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Additional Information:© 2010 SPIE. The research described in this paper was carried out at the Jet Propulsion Laboratory and the Spitzer Science Center, California Institute of Technology, under a contract with the National Aeronautics and Space Administration. The authors wish to thank Paul Finley, Mark Garcia, and Shanti Ancheta for assisting with the graphics.
Group:Infrared Processing and Analysis Center (IPAC)
Funding AgencyGrant Number
Subject Keywords:Spitzer; spacecraft operations; observation scheduling
Series Name:Proceedings of SPIE
Issue or Number:7737
Record Number:CaltechAUTHORS:20110314-151909863
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Official Citation:William A. Mahoney ; Lisa J. Garcia ; Joseph Hunt, Jr. ; Douglas B. McElroy ; Vince G. Mannings ; David S. Mittman ; JoAnn C. O'Linger ; Marc Sarrel and Elena Scire "Spitzer warm mission transition and operations", Proc. SPIE 7737, Observatory Operations: Strategies, Processes, and Systems III, 77371W (July 29, 2010); doi:10.1117/12.857814;
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:22873
Deposited By: Tony Diaz
Deposited On:16 Mar 2011 23:29
Last Modified:03 Oct 2019 02:41

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