Alignment and cryogenic testing of the Cassini Composite InfraRed Spectrometer (CIRS) far-infrared (FIR) focal plane

1996 ◽  
Author(s):  
Julie A. Crooke ◽  
John G. Hagopian
Keyword(s):  
Focal Plane ◽  
Far Infrared ◽  
Infrared Spectrometer ◽  
Cryogenic Testing

scholarly journals Development of Cryogenic Readout Electronics for Far-Infrared Astronomical Focal Plane Array

2011 ◽  
Vol E94-B (11) ◽  
pp. 2952-2960 ◽  
Author(s):  
Hirohisa NAGATA ◽  
Takehiko WADA ◽  
Hirokazu IKEDA ◽  
Yasuo ARAI ◽  
Morifumi OHNO ◽  
...  
Keyword(s):  
Focal Plane ◽  
Far Infrared ◽  
Focal Plane Array ◽  
Readout Electronics ◽  
Cryogenic Readout Electronics

A far‐infrared spectrometer based on cyclotron resonance emission sources

1992 ◽  
Vol 63 (6) ◽  
pp. 3293-3297 ◽  
Author(s):  
W. Knap ◽  
D. Dur ◽  
A. Raymond ◽  
C. Meny ◽  
J. Leotin ◽  
...  
Keyword(s):  
Cyclotron Resonance ◽  
Far Infrared ◽  
Emission Sources ◽  
Resonance Emission ◽  
Infrared Spectrometer ◽  
Far Infrared Spectrometer

Low-Frequency Photoacoustic Spectroscopy of Solids

1988 ◽  
Vol 42 (2) ◽  
pp. 289-292 ◽  
Author(s):  
J. C. Donini ◽  
K. H. Michaelian
Keyword(s):  
Fourier Transform ◽  
Carbon Black ◽  
Low Frequency ◽  
Far Infrared ◽  
Research Quality ◽  
Signal To Noise ◽  
Single Spectrum ◽  
Mid Infrared ◽  
Infrared Spectrometer ◽  
Computational Procedures

Research-quality far-infrared photoacoustic (PA) spectra are obtainable with a Fourier transform infrared spectrometer, the only changes with respect to conventional mid-infrared PA spectroscopy being the use of (1) a caesium iodide or polyethylene window on the PA cell, and (2) a mylar beamsplitter. Far-infrared PA spectra of several solids (bentonite, Fe+3-bentonite, and asbestos), in addition to the PA reference carbon black, have been recorded in this way. In order to improve signal-to-noise ratios in one of the spectra, we recorded ten interferograms under identical conditions; it was found that the average of the ten individually calculated spectra displays less noise and fewer spurious features than the spectrum obtained by first averaging the interferograms and then calculating a single spectrum. The results of this investigation demonstrate the feasibility of far-infrared PA spectroscopy, and illustrate that both experimental and computational procedures should be optimized in order to obtain the most satisfactory spectra.

The optical design of a far infrared spectrometer for SPICA: grating modules evaluation

2018 ◽  
Author(s):  
David Arrazola ◽  
Marianela Fernández ◽  
Luis Miguel González Fernández ◽  
Tomás Belenguer ◽  
Josefina Torres ◽  
...  
Keyword(s):  
Optical Design ◽  
Far Infrared ◽  
Infrared Spectrometer ◽  
Far Infrared Spectrometer

scholarly journals Diffraction-Limited Far-Infrared Imaging of “Protostars”

1987 ◽  
Vol 115 ◽  
pp. 371-371
Author(s):  
Paul M. Harvey ◽  
Daniel F. Lester ◽  
Marshall Joy
Keyword(s):  
Maximum Entropy ◽  
Focal Plane ◽  
Infrared Imaging ◽  
Region Of Interest ◽  
Far Infrared ◽  
Analysis Techniques ◽  
Plane Image ◽  
Maximum Entropy Deconvolution ◽  
Spectral Frequency ◽  
Size Scales

New mapping and analysis techniques for NASA's Kuiper Airborne Observatory are described which permit us to obtain information of size scales of order 10″ in the far-infrared. Basically, the focal-plane image is highly oversampled while the telescope is scanned smoothly and repeatedly over the region of interest with a slit of size λ/D. Maximum-entropy deconvolution is then used to obtain spectral frequency information down to scales of ∼ λ/2D.

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