GREAT spectrometer readied for flight on SOFIA

Mar 31, 2011 By Beth Hagenauer
GREAT spectrometer readied for flight on SOFIA
The German Receiver for Astronomy at Terahertz Frequencies, or GREAT, spectrometer was installed on SOFIA's telescope on March 18, 2011. Credit: DLR/GREAT

(PhysOrg.com) -- Scientists recently completed a series of nighttime, ground-based testing of the German Receiver for Astronomy at Terahertz Frequencies, or GREAT, spectrometer in preparation for a series of astronomical science flights on the Stratospheric Observatory for Infrared Astronomy in April. With the SOFIA 747SP aircraft positioned on the ramp outside NASA’s Dryden Aircraft Operations Facility, the upper door covering the telescope was opened and GREAT’s interaction with the telescope was evaluated.

The GREAT instrument is a receiver for spectroscopic observations at far-infrared frequencies between 1.2 and 5 terahertz (wavelengths between 60 and 250 microns). Those wavelengths are not accessible from ground-based telescopes because of atmospheric water vapor absorption.

GREAT is one of two first-generation instruments built for SOFIA by a consortium of German research institutes, including the Max Planck Institute for Radio Astronomy, the University of Cologne, the German Aerospace Center and the Max Planck Society. The Max Planck Society and German Research Society financed the development of the instrument.

SOFIA is a joint venture of and the German Aerospace Center DLR. NASA supplied the aircraft and the telescope was built in Germany. NASA’s Dryden Flight Research Center manages the SOFIA program. NASA's Ames Research Center at Moffett Field, Calif., manages SOFIA's scientific mission. The Universities Space Research Association, in Columbia, Md., and the German SOFIA Institute in Stuttgart, Germany, operate SOFIA's scientific mission operations respectively for NASA and the DLR.

Explore further: SDO captures images of two mid-level flares

add to favorites email to friend print save as pdf

Related Stories

NASA's SOFIA Observatory Obtains 'First Light' Imagery

May 27, 2010

(PhysOrg.com) -- NASA's Stratospheric Observatory for Infrared Astronomy, or SOFIA, successfully obtained its first in-flight, nighttime celestial observations during its “First Light” mission early Wednesday ...

SOFIA Observatory Prepares For Early Science Flights

Oct 05, 2010

(PhysOrg.com) -- Testing of the entire integrated observatory system and individual subsystems on NASA's Stratospheric Observatory for Infrared Astronomy 747SP is slated to occur during October during a series ...

NASA Astronomical Observatory Passes Hurdle

Jun 15, 2006

The world's largest airborne astronomical observatory has passed a technical and programmatic review that could potentially lead to the continuation of the mission.

SOFIA Prepares for Short Science

Nov 10, 2010

(PhysOrg.com) -- The SOFIA flying observatory was the subject of several nights of telescope system checkout activities in mid-October in preparation for upcoming early astronomical science flights.

CU telescope debuts on NASA flying observatory

May 25, 2010

(PhysOrg.com) -- SOFIA, the Stratospheric Observatory for Infrared Astronomy, will take flight May 25 along with the Cornell-built FORCAST (the Faint Object InfraRed Camera for the SOFIA Telescope).

Recommended for you

SDO captures images of two mid-level flares

Dec 19, 2014

The sun emitted a mid-level flare on Dec. 18, 2014, at 4:58 p.m. EST. NASA's Solar Dynamics Observatory, which watches the sun constantly, captured an image of the event. Solar flares are powerful bursts ...

Why is Venus so horrible?

Dec 19, 2014

Venus sucks. Seriously, it's the worst. The global temperature is as hot as an oven, the atmospheric pressure is 90 times Earth, and it rains sulfuric acid. Every part of the surface of Venus would kill you ...

Image: Christmas wrapping the Sentinel-3A antenna

Dec 19, 2014

The moment a team of technicians, gowned like hospital surgeons, wraps the Sentinel-3A radar altimeter in multilayer insulation to protect it from the temperature extremes found in Earth orbit.

Video: Flying over Becquerel

Dec 19, 2014

This latest release from the camera on ESA's Mars Express is a simulated flight over the Becquerel crater, showing large-scale deposits of sedimentary material.

Spinning up a dust devil on Mars

Dec 19, 2014

Spinning up a dust devil in the thin air of Mars requires a stronger updraft than is needed to create a similar vortex on Earth, according to research at The University of Alabama in Huntsville (UAH).

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.