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TELIS: TErahertz and subMMW LImb Sounder – Project summary after first successful flight

Birk , Manfred and Wagner, Georg and de Lange, Gert and de Lange, Arno and Ellison , Brian N. and Harman, Mark R. and Murk, Axel and Oelhaf, Hermann and Maucher, Guido and Sartorius, Christian (2010) TELIS: TErahertz and subMMW LImb Sounder – Project summary after first successful flight. In: 21st International Symposium on Space Terahertz Technology 2010, pp. 195-200. 21st International Symposium on Space Terahertz Technology, 23.-25. März 2010, Oxfordshire, GB.

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Official URL: http://www.nrao.edu/meetings/isstt/index.shtml

Abstract

The TELIS instrument is a balloon-borne cryogenic three-channel heterodyne spectrometer for limb sounding of stratospheric trace gases. The instrument is flown together with the MIPAS-B Fourier-transform spectrometer of the IMK, Karlsruhe. TELIS was developed by a European consortium involving research institutions, universities, and industrial partners. Thermal emission radiation is coupled in by a 26x13 cm dual offset Cassegrain telescope controlled to maintain constant tangent height during measurement. Radiometric calibration is achieved by a blackbody and deep space view. The radiation is divided into three channels by means of a polarizer and a dichroic. Within a special lightweight cryostat three complete heterodyne receivers are kept at liquid helium temperature: THZ channel, 1750-1890 GHz, hot electron bolometer mixer, DLR; SIR channel, 450-650 GHz, integrated receiver, SIS mixer, SRON (see poster ‘TELIS instrument performance analysis’); subMMW channel, 499-503 GHz, SIS mixer, RAL. A digital autocorrelator spectrometer with 4 GHz bandwidth and ca. 2 MHz resolution serves as backend shared among the channels. The first successful flight was in March 2009 in Kiruna, Sweden. Calibrated spectra are so far only available as quicklook data. Sideband ratios have been characterized recently. The radiometric accuracy of the autocorrelator is under investigation (see poster ‘Characterisation of the TELIS autocorrelator spectrometer’). The present paper will present the instrument as well as first results from the flight.

Document Type:Conference or Workshop Item (Speech, Paper)
Title:TELIS: TErahertz and subMMW LImb Sounder – Project summary after first successful flight
Authors:
AuthorsInstitution or Email of Authors
Birk , Manfred manfred.birk@dlr.de
Wagner, Georg georg.wagner@dlr.de
de Lange, Gert Netherlands Institute for Space Research (SRON)
de Lange, Arno Netherlands Institute for Space Research (SRON)
Ellison , Brian N. Rutherford Appleton Laboratories (RAL)
Harman, Mark R. Rutherford Appleton Laboratories (RAL)
Murk, Axel University Bern
Oelhaf, Hermann Karlsruhe Institute of Technology (KIT)
Maucher, Guido Karlsruhe Institute of Technology (KIT)
Sartorius, Christian UNSPECIFIED
Date:2010
Journal or Publication Title:21st International Symposium on Space Terahertz Technology 2010
Page Range:pp. 195-200
Editors:
EditorsEmail
Yassin, GhassanRAL
Ellison, BrianRAL
Status:Published
Keywords:atmospheric remote sensing, cryogenic 3-channel heterodyne receiver
Event Title:21st International Symposium on Space Terahertz Technology
Event Location:Oxfordshire, GB
Event Type:international Conference
Event Dates:23.-25. März 2010
Organizer:University of Oxford and STFC Rutherford Appleton Laboratory
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W EO - Erdbeobachtung
DLR - Research area:Space
DLR - Program:W EO - Erdbeobachtung
DLR - Research theme (Project):W - Projekt TELIS (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Experimental Methods
Deposited By: Dr.rer.nat. Georg Wagner
Deposited On:30 Nov 2010 07:12
Last Modified:20 Jan 2011 11:31

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