Results 21 to 30 of about 2,654,075 (70)

UN/ESA Workshops on Basic Space Science: An Initiative in the Worl dwide Development of Astronomy [PDF]

Journal of Astronomical History and Heritage 1(1998)105-121, 1998
In 1990, the United Nations, in cooperation with the European Space Agency, initiated the organization of a series of annual Workshops on Basic Space Science for the benefit of astronomers and space scientists in Asia and the Pacific, Latin American and the Caribbean, Africa, Western Asia, and Europe.
arxiv  

Experiment of Diffuse Reflection Laser Ranging to Space Debris and Data Analysis [PDF]

, 2014
Space debris has been posing a serious threat to human space activities and is needed to be measured and cataloged. As a new technology of space target surveillance, the measurement accuracy of DRLR (Diffuse Reflection Laser Ranging) is much higher than that of microwave radar and electro-optical measurement. Based on laser ranging data of space debris
arxiv   +1 more source

Towards an automatic processing of CCD images with CPCS 2.0 [PDF]

arXiv, 2020
We present a new automatic tool for time-domain astronomy - the Cambridge Photometric Calibration Server 2.0 - developed under OPTICON H2020 programme. It has been designed to respond to the need of automated rapid photometric data calibration and dissemination for transient events, primarily from Gaia space mission.
arxiv  

Simple demonstration experiments for astronomical parallax [PDF]

arXiv, 2017
Parallax is the most important astronomical method for determining the distances from the Earth to nearby stars. We present two hands-on activities that explore the concepts and practice of parallax measurement. The first activity is a simple geometrical set-up using simple theodolites, and is accessible for students grade 7 and above.
arxiv  

Discovering the Unexpected in Astronomical Survey Data [PDF]

, 2016
Most major discoveries in astronomy are unplanned, and result from surveying the Universe in a new way, rather than by testing a hypothesis or conducting an investigation with planned outcomes. For example, of the 10 greatest discoveries made by the Hubble Space Telescope, only one was listed in its key science goals.
arxiv   +1 more source

Performance of the Imaging Fourier Transform Spectrometer with Photoconductive Detector Arrays: An Application for the AKARI Far-Infrared Instrument [PDF]

, 2008
We have developed an imaging Fourier transform spectrometer (FTS) for space-based far-infrared astronomical observations. The FTS employs a newly developed photoconductive detector arrays with a capacitive trans-impedance amplifier, which makes the FTS a completely unique instrument.
arxiv   +1 more source

Worldwide Development of Astronomy: The Story of a Decade of UN/ESA Workshops on Basic Space Science [PDF]

Adv.Space Sci.Technol. 18 (1998) 149-156, 1997
In 1990 the United Nations in cooperation with the European Space Agency initiated the organization of a series of annual Workshops on Basic Space Science for the benefit of astronomers and space scientists in Asia and the Pacific, Latin America and the Caribbean, Africa, Western Asia, and Europe.
arxiv  

National Astronomical Observatory of Japan [PDF]

AAPPS Bulletin June 2009, Vol.19, No.3, pp.5-10, 2009
National Astronomical Observatory is an inter-university institute serving as the national center for ground based astronomy offering observational facilities covering the optical, infrared, radio wavelength domain. NAOJ also has solar physics and geo-lunar science groups collaborating with JAXA for space missions and a theoretical group with computer ...
arxiv  

United Nations Basic Space Science Initiative (UNBSSI) 1991-2012 and Beyond [PDF]

arXiv, 2015
This paper contains an overview and summary on the achievements of the United Nations basic space science initiative in terms of donated and provided planetariums, astronomical telescopes, and space weather instruments, particularly operating in developing nations.
arxiv  

A Needs Analysis Study of Amateur Astronomers For the National Virtual Observatory [PDF]

arXiv, 2005
Through a combination of qualitative and quantitative processes, a survey was conducted of the amateur astronomy community to identify outstanding needs which the National Virtual Observatory (NVO) could fulfill. This is the final report of that project, which was conducted by The American Association of Variable Star Observers (AAVSO) on behalf of the
arxiv