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A PC World review of the original beta concluded that WorldWide Telescope "has a few shortcomings" but "is a phenomenal resource for enthusiasts, students, and teachers." [ 21 ] It also believed the product to be "far beyond Google's current offerings."
This list of the largest optical reflecting telescopes with objective diameters of 3.0 metres (120 in) or greater is sorted by aperture, which is a measure of the light-gathering power and resolution of a reflecting telescope. The mirrors themselves can be larger than the aperture, and some telescopes may use aperture synthesis through ...
The Hubble Space Telescope Comparison between many space telescopes by diameter Overview of active and future telescopes (as of January 2021) This list of space telescopes ( astronomical space observatories ) is grouped by major frequency ranges : gamma ray , x-ray , ultraviolet , visible , infrared , microwave , and radio .
Near-Earth Object Survey Telescope (NEOST) [100] 1.00 m: 39.4" Single: China: Purple Mountain Observatory, China: 2006 RT 1.00 m: 1.00 m: 39.4″ TÜBİTAK National Observatory: OGS Telescope [101] 1.00 m: 39.4″ Single: European Space Agency countries: Teide Observatory, Canary Islands, Spain: 1995 Jacobus Kapteyn Telescope: 1.00 m: 39.4 ...
2005 – First light at SALT, the largest optical telescope in the Southern Hemisphere, with a hexagonal primary mirror of 11.1 by 9.8 meters. 2007 – First light at Gran Telescopio de Canarias (GTC), in Spain, the largest optical telescope in the world with an effective diameter of 10.4 meters.
CSRH is an interferometer under construction in China. The CSRH will consist of 100 telescopes covering 0.4–15 GHz. 40 telescopes of 4.5 m cover 400 MHz – 2 GHz and 60 telescopes of 2 m cover 2–15 GHz. CSRH will be one of the world's largest and most advanced imaging spectroscopy instruments.
Between 2004 and 2013, more Central European countries began joining, expanding the EU to 28 European countries and once more making Europe a major economical and political centre of power. [235] However, the United Kingdom withdrew from the EU on 31 January 2020, as a result of a June 2016 referendum on EU membership . [ 236 ]
OGS Telescope [77] 100 cm: 39.4″ Single: European Space Agency countries: Teide Observatory, Tenerife, Spain: 1995 Jacobus Kapteyn Telescope: 100 cm: 39.4″ Single: UK + Netherlands: Isaac Newton Group, Canary Islands: 1984: Lulin One-meter Telescope (LOT) [78] 100 cm: 39.4″ Single: ROC (Taiwan) Lulin Observatory, Taiwan: 2002* Zeiss di ...