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Thirty Meter Telescope Site Testing I: Overview
As part of the conceptual and preliminary design processes of the Thirty Meter Telescope (TMT), the TMT site-testing team has spent the last five years measuring the atmospheric properties of fiveExpand
Keck II laser guide star AO system and performance with the TOPTICA/MPBC laser
The Keck II Laser Guide Star (LGS) Adaptive Optics (AO) System was upgraded from a dye laser to a TOPTICA/MPBC Raman-Fibre Amplification (RFA) laser in December 2015. The W. M. Keck ObservatoryExpand
Local thermal seeing modeling validation through observatory measurements
Dome and mirror seeing are critical effects influencing the optical performance of ground-based telescopes. Computational Fluid Dynamics (CFD) can be used to obtain the refractive index field along aExpand
Prospects for Terahertz Radio Astronomy from Northern Chile
The teraheitz (THz) frequency range (1-3 THz, or 100-300 pm wavelength) provides an important window on the far-infrared Universe. Recent studies of the transmission spectrum of Earth's atmosphereExpand
Thirty Meter Telescope Site Testing X: Precipitable Water Vapor
The results of the characterization of precipitable water vapor in the atmospheric column carried out in the context of identifying potential sites for the deployment of the Thirty Meter TelescopeExpand
ALMA Memo No. 497 ANALYSIS OF WIND DATA GATHERED AT CHAJNANTOR
th Floor, Tucson, AZ 85721 2004 May 7 Abstract A general description and statistics of the wind speeds and directions registered at the ALMA site during 2001 and 2002 are presented. Measurements fromExpand
ATMOSPHERIC TRANSPARENCY AT CHAJNANTOR : 1973-2003
Atmospheric conditions at Chajnantor have been monitored since April 1995. Starting then, the National Radio Astronomy Observatory (NRAO), joined by the European Southern Observatory (ESO), OnsalaExpand
A Single 30 cm Aperture Antenna Design for The Operation of 2 Widely Separated Frequency Bands for the Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS)
The Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS) is designed to observe Earth’s climate. It extends and overcomes several limitations of the GPS radio occultationExpand
Development and testing of the Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS) cm and mm wavelength occultation instrument
Abstract. We present initial results from testing a new remote sensing system called the Active Temperature, Ozone and Moisture Microwave Spectrometer (ATOMMS). ATOMMS is designed as aExpand
First observations and magnitude measurement of Starlink's Darksat
Measure the Sloan g' magnitudes of the Starlink's STARLINK-1130 (Darksat) and 1113 LEO communication satellites and determine the effectiveness of the Darksat darkening treatment at 475.4\,nm. TwoExpand
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