منابع مشابه
National Astronomical Observatory of Japan
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 simulation facilities. The outline of NAOJ,...
متن کاملNight sky at the Indian Astronomical Observatory during 2000 − 2008
This paper presents an analysis of the optical night sky brightness and extinction coefficient measurements in UBVRI at the Indian Astronomical Observatory (IAO), Hanle, during the period 2003−2008. They are obtained from an analysis of CCD images acquired at the 2 m Himalayan Chandra Telescope (HCT) at IAO. Night sky brightness was estimated using 210 HFOSC images obtained on 47 nights and cov...
متن کاملPulsar Timing at Urumqi Astronomical Observatory: Observing System and Results
A pulsar timing system has been operating in the 18-cm band at the Urumqi Astronomical Observatory 25-m telescope since mid-1999. Frequency resolution allowing dedispersion of the pulsar signals is provided by a 2×128×2.5 MHz filterbank/digitiser system. Observations of 74 pulsars over more than 12 months have resulted in updated pulsar periods and period derivatives, as well as improved positi...
متن کاملThe Virtual Astronomical Observatory: Re-engineering access to astronomical data
TheUSVirtual Astronomical Observatorywas a software infrastructure anddevelopment project designed both to begin the establishment of an operational Virtual Observatory (VO) and to provide the US coordination with the international VO effort. The concept of the VO is to provide the means by which an astronomer is able to discover, access, and process data seamlessly, regardless of its physical ...
متن کاملProgress with Adaptive Optics Testbeds at the UCO/Lick Observatory Laboratory for Adaptive Optics
We report on experimental results with adaptive optics testbeds at the UCO/Lick Observatory. One testbed is dedicated to high contrast AO imaging and is a prototype for a ground-based extrasolar planet imager for the Gemini telescope. The second testbed is dedicated to developing concepts and architectures for multilaser guidestar tomography in wide-field AO applications. Such systems are now u...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1897
ISSN: 0036-8733
DOI: 10.1038/scientificamerican10091897-18163bsupp