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closeup view on oculars of large professional telescope located indoors
Dome of Shenzhen Observatory
Sapporo City Observatory at Nakajima Park in Sapporo, Hokkaido, Japan
Mount Evans, Clear Creek County, Colorado, USA: Meyer–Womble Observatory (MWO) astronomical observatory -  property of the University of Denver. Located near the summit of Mount Evans in the Arapaho National Forest, at an elevation of 4,326 meters (14,193 ft), it is the third-highest optical/infrared observatory in the world.
in Quebec, Canada
Little observatory at the top of an building of the Potsdam University (Germany) during sunset.
The Observatory in the center of Santiago, Chile, South America
A night sky full of stars and an observatory on Ishigaki island.
Brick observatory dome on a grassy hill with blue sky and clouds.
The Milky Way and Astronomical Observatory
White dome of a large telescope in the Observatory at sunset
Reykjavík, Capital Region, Iceland: geothermal water storage tanks on Öskjuhlid Hill, supplying the city with hot water, with a viewing deck and revolving restaurant on top.
Leiden, The Netherlands, September 3, 2019: the old observatory of Leyden University in a neoclassicist building with four domes on its roof
Large Storage Dome for Construction
Nizhny Arkhyz, Russia - June 26, 2021: Aerial view of Astrophysical observatory of the Russian Academy of Sciences in Caucasus. BTA tower. Cloudy. Scenic landscape, cosmos, astronomy concept. Summer
Observatory  of the Pico dos Dias MG Brasil
The Harlan J. Smith telescope is located inside the Astronomers Lodge. The lodge was the first telescope building created. The next telescope built was the Otto Struve telescope, located in close nearby.
Building of the astronomical observer in the Tatra mountain, Slovakia
Multiple observatory domes on a grassy hill with blue sky and clouds. Special astrophysical observatory of the Russian academy of sciences, Arkhyz
Mount Evans, Clear Creek County, Colorado, USA: Meyer–Womble Observatory (MWO) astronomical observatory -  property of the University of Denver. Built near the summit of Mount Evans in the Arapaho National Forest, at an elevation of 4,326 meters (14,193 ft), it is the third-highest optical/infrared observatory in the world.
University of Canterbury Mt John Observatory - New Zealand
Grain elevator against blue sky at the port.
Astronomical observatory for science research of space and cosmos.
Telescopes from Roque de los Muchachos Observatory, La Palma, Canary Islands
Forcarei astronomical observatory surrounded by snow and under cloudy sky
architecture abstract of astronomical equipment at the McDonald observatory. In the Davis mountains of west Texas under an intricate abstract cloudscape.
Special astrophysical observatory of Russian Academy of sciences located in mountain area (Caucasus, Russia) at altitude 2000 m (6000 ft) near Arkhyz.  Surrounding mountains and blue sky serve as a background.
Reykjavík, Capital Region, Iceland: Perlan ('the pearl') is a hot water storage tank in Iceland's capital Reykjavík. The building connecting the pre-existing tanks was designed by Ingimundur Sveinsson and opened in 1991. From here, the city is supplied with hot water, including the sidewalks and streets, which are heated in winter. The hot water tanks - five of the six are still in operation - each hold up to four thousand cubic meters of hot water at a temperature of around 85 °C. Due to its elevated location on the Öskjuhlíð hill (61 m), Perlan can supply all buildings in Reykjavík with energy from hot water using only gravity. The hot water for Reykjavík is taken from around 70 boreholes in Reykjavík, Mosfellsbær and Nesjavellir, most of which reach depths of between 500 m and 2000 m. A large part of the thermal energy can be obtained directly from geothermal energy.
a view of observatory of pic du midi de bigorre, french pyrenees
Minaret of Baitussalam Nyak Sandang mosque againts blue sky
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