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The SOFIA Observatory at the Start of Routine Science Operations : Mission capabilities and performance

The SOFIA Observatory at the Start of Routine Science Operations : Mission capabilities and performance

Authors :
Douglas Hoffman
Peter T. Zell
Allan W. Meyer
Jürgen Wolf
William D. Vacca
Erin C. Smith
Maureen L. Savage
Elizabeth Moore
Eric B. Burgh
B-G Andersson
Hans Zinnecker
Stefan Teufel
Jeffrey Van Cleve
William T. Reach
Scott R. Miller
Alfred Krabbe
Jeff Homan
Ting C. Tseng
Geoffrey Ediss
Stephen C. Jensen
Thomas L. Roellig
John Rasmussen
Randolf Klein
Charles Kaminski
Rick Brewster
Andrew L. Helton
John E. Vaillancourt
Enrico Pfueller
Manuel Wiedemann
Ehsan Talebi
Oliver Zeile
Adwin Boogert
Sybil Adams
Julie Schonfeld
Jeanette Le
Eddie Zavala
S. Shenoy
William B. Latter
J. T. Radomski
Yannick Lammen
Andreas Reinacher
Jim De Buizer
Donald J. Nickison
Daniel Kozarsky
J. W. Miles
Randy Grashuis
Walter E. Miller
Ravi Sankrit
Nancy McKown
Brent R. Cobleigh
Maura Fujieh
Riccardo Melchiorri
Pasquale Temi
Göran Sandell
Michael A. K. Gross
Kortney Opshaug
Erick T. Young
Pamela M. Marcum
Edward Harmon
Eric E. Becklin
Edward W. Dunham
Ralph Y. Shuping
Michael Hutwohl
Ulrich Lampater
Joseph D. Adams
Holger Jakob
Christian Engfer
Steven Culp
Source :
Web of Science
Publication Year :
2014
Publisher :
arXiv, 2014.

Abstract

The Stratospheric Observatory for Infrared Astronomy (SOFIA) has recently concluded a set of engineering flights for Observatory performance evaluation. These in-flight opportunities are viewed as a first comprehensive assessment of the Observatory's performance and are used to guide future development activities, as well as to identify additional Observatory upgrades. Pointing stability was evaluated, including the image motion due to rigid-body and flexible-body telescope modes as well as possible aero-optical image motion. We report on recent improvements in pointing stability by using an active mass damper system installed on the telescope. Measurements and characterization of the shear layer and cavity seeing, as well as image quality evaluation as a function of wavelength have also been performed. Additional tests targeted basic Observatory capabilities and requirements, including pointing accuracy, chopper evaluation and imager sensitivity. This paper reports on the data collected during these flights and presents current SOFIA Observatory performance and characterization.<br />Comment: 13 pages, 13 figure, and 2 tables; accepted by ApJS

Details

Database :
OpenAIRE
Journal :
Web of Science
Accession number :
edsair.doi.dedup.....7ee27abcd3b6288571e87abc7a5bc3c2
Full Text :
https://doi.org/10.48550/arxiv.1405.7390