Low Cost and Efficient Flight Operations System for SIRTF
The Space Infrared Telescope Facility (SIRTF), the fourth of the Great Observatories, will be placed in a unique solar orbit trailing the Earth, in 2001.
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The Space Infrared Telescope Facility (SIRTF), the fourth of the Great Observatories, will be placed in a unique solar orbit trailing the Earth, in 2001.
SIRTF, The Space Infrared Telescope Facility, is scheduled for launch in December 2001.
SIRTF guaranteed time observers have specified field surveys to be carried out with IRAC with integration times per position ranging from 90 to over 10,000 seconds. This paper describes the plans for these surveys and their application to the study of galaxy formation and evolution.
SIRTF represents an important scientific and technical bridge to NASA's new Origins program, and is managed for NASA by the Jet Propulsion Laboratory, California Institute of Technology.
Two of the objectives for the Space Infrared Telescope Facility (SIRTF) will be studying the redshifted starlight from quiescent galaxies and studying infrared luminous starburst galaxies.
This paper describes the status of NASA's Space Infrared Telescope Facility (SIRTF) program.
The Space Infrared Telescope Facility (SIRTF) is one of NASA's Great Observatory missions, scheduled for launch in 2001.
The most recent approach to the Space Infrared Telescope Facility (SIRTF) uses a new design concept in which the telescope is launched warm and subsequently cooled to operating temperature on orbit. At launch, the cryostat is at 2 K and the telescope is at room temperature. Cooldown of the telescope will be accomplished initially through radiation to space. Final cooldown to the 5.5 K operating temperature is done with helium vapor. Initially, the helium flow on orbit will be 20 to 30 times larger than required for steady-state operation. The vent line and the liquid/vapor phase separator (porous plug) therefore must accommodate a large dynamic operational range.For ground testing of IR instruments, the required temperature is 1.5 K. The helium tank temperature for both ground testing and space operations thus needs to be at 1.4 K. We present a discussion of the requirements, a conceptual design, and initial laboratory test results with candidate porous plugs and associated instrumentation. A discussion of possible connections to the design of the Gravity Probe-B cryostat will be presented also.
This paper presents how the mission has been designed to facilitate science data collection, with special emphasis on how the flight path meets, and in some cases far exceeds, the requirements of the various SIRTF systems.
This paper describes a nominal mission plan that progressively establishes SIRTF capabilities during the IOC/SV phases, taking into consideration thermal, cryogrenic, optical, communications, celestial mechanics, and operational designs and constraints.
This paper will provide an overview of the SIRTF mission, telescope, cryostat, instruments, spacecraft, orbit, and operations in preparation for an accompanying set of detailed technical presentations.
The Space Infrared Telescope Facility (SIRTF) is in the middle of the development phase and on track for a December, 2001 launch.
This paper reports on the status of SIRTF - the Space Infrared Telescope Facility.
NASA's Space Infrared Telescope Facility (SIRTF) is a 1-meter class cryogenically-cooled space observatory.
SIRTF requires detector arrays with extremely high sensitivity, limited only by the background irradiance. Especially critical is the near infrared spectral region around 3 mu m, where the detector current due to the zodiacal background is a minimum
The Space Infrared Telescope Facility (SIRTF) is the last of the NASA Great Observatories, and a Cornerstone of the NASA Origins Missions.
The Space Infrared Telescope Facility (SIRTF) is a cornerstone of NASA's Origins program, and will complete NASA's family of Great Observations when it is launched in December 2001.
The Space Infrared Telescope Facility (SIRTF), the fourth of the Great Observatories, will look through a new window on the universe.