21 to 30 of 2,222 Results
Dec 15, 2020
Abraham, Douglas S, 2020, "Antenna Beam Sharing: Current Capabilities and Future Prospects", https://hdl.handle.net/2014/53412, DSN Briefing #12, Pasadena, California, December 15, 2020, JPL Open Repository
No abstract provided |
Dec 15, 2020
Asharaf, Shakeel, 2020, "CYGNSS Ocean Surface Wind Validation in the Tropics", https://doi.org/10.48577/jpl.XYHOGH, Journal of Atmospheric and Oceanic Technology, JPL Open Repository
Surface wind plays a crucial role in many local/regional weather and climate processes,26 especially through the exchanges of energy, mass and momentum across the Earth’s surface.27 However, there is a lack of consistent observations with continuous coverage over the global28 tro... |
Dec 15, 2020
Chahat, Nacer E, 2020, "Spacecraft Antennas for Deep Space and Earth Science Missions", https://hdl.handle.net/2014/53407, APSYM 2020, Pasadena, California, December 15-16, 2020, JPL Open Repository
No abstract provided |
Dec 14, 2020
Kimberley Miner, 2020, "Deposition of PFAS 'forever chemicals' on Mt. Everest", https://doi.org/10.48577/jpl.FYNNXH, Environmental Science and Technology Letters, JPL Open Repository
Mt. Everest, one of the most coveted climbing mountains on earth, also contains the highest altitude chemical contamination on land. We analyzed meltwater and snow samples from the Khumbu Glacier for "forever chemicals" per- and polyfluoroalkyl substances (PFAS) for the first tim... |
Dec 14, 2020
Frank Werner, 2020, "Extreme outliers in lower stratospheric water vapor over North America observed by MLS: Relation to overshooting convection diagnosed from colocated Aqua-MODIS data", https://doi.org/10.48577/jpl.CE2IZV, Geophysical Research Letters, JPL Open Repository
Convectively injected water vapor (H2O) in the North American (NA) summer lower17most stratosphere results in significant outliers in the 100-hPa H2O measurements from18 the Aura Microwave Limb Sounder (MLS). MLS statistics from 15 years confirm that19 the NA region contains over... |
Dec 14, 2020
Bendek, Eduardo; Noyes, Matt; Flores, Catalina; Sirbu, Dan; Belikov, Ruslan; Guyon, Olivier; Tuthill, Peter, 2020, "Status of NASA’s stellar astrometry testbeds for exoplanet detection: Science and technology overview", https://hdl.handle.net/2014/53326, VIRTUAL SPIE Astronomical Telescopes + Instrumentation 2020, San Diego, California, December 14-18, 2020, JPL Open Repository
No abstract provided |
Dec 14, 2020
Harness, Anthony; Shaklan, Stuart; Kasdin, N. Jeremy; Willems, Phillip; Balasubramanian, K.; Dumont, Philip; White, Victor; Yee, Karl; Muller, Rich; Vuong, Simon; Galvin, Michael, 2020, "Validation of Diffraction Models With Experimental Results From the Princeton Starshade Testbed", https://hdl.handle.net/2014/53299, SPIE Astronomical Telescopes + Instrumentation 2020, San Diego, California, December 14-18, 2020, JPL Open Repository
Starshades are a leading technology to detect and characterize Earth-like exoplanets. In this paper we report on optical experiments of sub-scale starshades that advance critical starlight suppression technologies in preparation for the next generation of space telescopes. These... |
Dec 14, 2020
Crill, Brendan; Werner, Michael; Akeson, Rachel; Ashby, Matthew; Bleem, Lindsey; Bock, James J.; Bryan, Sean; Chang, Tzu-Ching; Cooray, Asantha; Dore, Olivier; Dowell, C. Darren; Dubois-Felsmann, Gregory; Eifler, Tim; Habib, Salman; Heinrich, Chen; Heitmann, Katrin; Hemmati, Shoubaneh; Heaton, Grigory; Hirata, Christopher; Hui, Howard; Jeong, Woong-Seob; Kang, Jae Hwan; Kirkpatrick, J. Davy; Korngute, Phillip M.; Krauseh, Elisabeth; Lissek, Carey; Mauskopff, Philip; Mastersb, Daniel; Melnick, Gary; Nguyen, Hien; Nayyeri, Hooshang; Oberg, Karin; Padin, Steve; Paladini, Roberta; Pourrahmani, Milad; Pyo, Jyeonghyung; Smith, Roger; Song, Yong-Seon; Symons, Teresa; Teplitz, Harry; Tolls, Volker; Unwin, Stephen; Windhorstf, Rogier; Yanj, Yujin; Zemcov, Michael, 2020, "SPHEREx: NASA’s Near-Infrared Spectrophotmetric All-Sky Survey", https://hdl.handle.net/2014/53288, VIRTUAL SPIE Astronomical Telescopes + Instrumentation 2020, San Diego, California, December 14-18, 2020, JPL Open Repository
SPHEREx, the Spectro-Photometer for the History of the Universe, Epoch of Reionization, and ices Explorer, isa NASA MIDEX mission planned for launch in 2024. SPHEREx will carry out the first all-sky spectral survey at wavelengths between 0.75μm and 5μm with spectral resolving pow... |
Dec 14, 2020
Meeker, Seth R.; Truonga, Tuan N.; Roberts, Jennifer E.; Shelton, J. Chris; Fregoso, S. Felipe; Burruss, Rick S.; Dekany, Richard G.; Wallace, J. Kent; Baker, John W.; Heffner, Carolyn M.; Mawet, Dimitri; Rykoski, Kevin M.; Tesch, Jonathan A.; Vasisht, Gautam, 2020, "Design and Performance of the PALM-3000 3.5 kHz Upgrade", https://hdl.handle.net/2014/53317, SPIE Astronomical Telescopes + Instrumentation 2020, San Diego, California, December 14-18, 2020, JPL Open Repository
PALM-3000 (P3K), the second-generation adaptive optics (AO) instrument for the 5.1 meter Hale telescope atPalomar Observatory, was released as a facility class instrument in October 2011 and has since been used on-skyfor over 600 nights as a workhorse science instrument and testb... |
Dec 14, 2020
Marx, David; Kerna, Brian; Krista, John; Balasubramaniana, Bala; Riggsa, A. J. Eldorado; Cadya, Eric; Seoa, Byoung-Joon; Tanga, Hong; Pradaa, Camilo; Ruanea, Garreth; Shia, Fang; Noeckera, Charley; Crowther, Blake, 2020, "Prediction and Evaluation of the Image of the WFIRST Coronagraph Pupil at the Shaped-Pupil Mask", https://hdl.handle.net/2014/53301, SPIE Astronomical Telescopes + Instrumentation 2020, San Diego, California, December 14-18, 2020, JPL Open Repository
To create a high contrast field of view with a shaped pupil coronagraph (SPC), the telescope pupil is imaged onto the shaped pupil mask, the shaped pupil mask is designed and fabricated through a design optimization based on a given pupil wavefront, and deformable mirrors (DM) in... |
