NASA Scientific and Technical Aerospace Reports
NASA Scientific and Technical Aerospace Reports
NASA Scientific and Technical Aerospace Reports
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Architecture with Uncooled TIR Detectors, <strong>and</strong> simulated thermal imagery.<br />
CASI<br />
Satellite Imagery; Infrared Instruments; L<strong>and</strong>sat Satellites<br />
20040070934 North Dakota Univ., Gr<strong>and</strong> Forks, ND, USA<br />
Plans for a 1-Meter-Class Professional Astronomical Observatory for the State of North Dakota<br />
Hardersen, P. S.; deSilva, S.; Lunar <strong>and</strong> Planetary Science XXXV: Engaging K-12 Educators, Students <strong>and</strong> the General Public<br />
in Space Science Exploration; 2004; 2 pp.; In English; Lunar <strong>and</strong> Planetary Science XXXV, 15-19 Mar. 2004, Houston, TX,<br />
USA; Copyright; Avail: CASI; C01, CD-ROM; A01, Hardcopy<br />
The Department of Space Studies at the University of North Dakota (UND) is proposing to build <strong>and</strong> operate a<br />
1-meter-class professional astronomical observatory in the State of North Dakota. Currently, no professional observatories<br />
exist within the state. The proposed facility, which will be operated <strong>and</strong> maintained by the Department of Space Studies, will<br />
serve state-wide research, education, <strong>and</strong> public outreach goals through collaborative outreach efforts with North Dakota s<br />
colleges, universities, <strong>and</strong> public <strong>and</strong> private schools. Educators, students, <strong>and</strong> researchers will have access to the observatory<br />
either on-site or via the Internet. Research efforts will primarily focus on different types of photometry due to the low-altitude<br />
location of the observatory.<br />
Author<br />
Astronomical Observatories; Low Altitude; Photometry<br />
20040070968 Lawrence Livermore National Lab., Livermore, CA<br />
Germanium Based Coded Aperture Gamma-Ray Imager<br />
Ziock, K. P.; Pohl, B.; Schmid, G.; Cork, C.; Hull, E.; Jul. 06, 2000; 14 pp.; In English<br />
Report No.(s): DE2004-15006370; UCRL-JC-137316; No Copyright; Avail: Department of Energy Information Bridge<br />
The advantages of spectrally resolved gamma-ray imaging have previously been demonstrated for the detection of fissile<br />
materials. However, previous results have been obtained with the relatively poor spectral resolution provided by<br />
scintillator-based detectors. In this paper we present a new class of coded aperture imager based on a position-sensitive<br />
germanium detector. The use of this detector type provides a factor of 40 improvement in energy resolution which improves<br />
the quality of the images obtained while reducing the integration time required. Tight spectral cuts on known emission lines<br />
allow deeper penetration into highly attenuating objects. In addition, advanced analysis techniques can provide information<br />
on overlying material though the application of spatially resolved gamma-gauging. We describe the imager, present<br />
simulations of its capabilities <strong>and</strong> the first characterizations of a prototype detector.<br />
NTIS<br />
Radiation Detectors; Germanium; Imaging Techniques; Gamma Ray Spectra<br />
20040071001 <strong>NASA</strong> Stennis Space Center, Bay Saint Louis, MS, USA<br />
Portable Instrument to Measure CDOM Light Absorption in Aquatic Systems: WPI Success Story<br />
September 20, 2001; 8 pp.; In English; Original contains black <strong>and</strong> white illustrations<br />
Report No.(s): SE-2001-09-00053-SSC; No Copyright; Avail: CASI; A02, Hardcopy<br />
World Precision Instruments, Inc. (WPI), of Sarasota, FL, in collaboration with <strong>NASA</strong>’s John C. Stennis Space Center,<br />
has developed an innovative instrument to accurately measure Colored Dissolved Organic Matter (CDOM) absorption in the<br />
field. This successful collaboration has culminated in an exciting new device, called the UltraPath, now commercially<br />
available through WPI. Traditional methods of measuring absorption of dissolved materials require special h<strong>and</strong>ling <strong>and</strong><br />
storage prior to measurement. Use of laboratory spectrophotometers as the measuring devices have proven time consuming,<br />
cumbersome, <strong>and</strong> delicate to h<strong>and</strong>le. The UltraPath provides a low-cost, highly sensitive, rugged, portable system that is<br />
capable of high sensitivity measurements in widely divergent waters.<br />
Author<br />
Dissolved Organic Matter; Absorptivity; Optical Measurement; Spectrometers<br />
20040071006 Spectra Research Systems, Inc., Huntsville, AL, USA<br />
Innovative Structural Design Features for a 10 m Solar Sail Demonstrator<br />
Laue, G.; Moore, J.; Clayton, W.; April 07, 2004; 3 pp.; In English; AIAA Gossamer Spacecraft Conference, 19-22 Apr. 2004,<br />
Palm Springs, CA, USA; No Copyright; Avail: CASI; A01, Hardcopy<br />
The successful development of sail architectures will require careful attention to a number of key issues including but not<br />
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