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File:Equatorial mount principle.svg

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English: Principle of operation of an equatorial mount to keep a telescope pointing in the same direction. The black spots denote rotation axes seen end-on. The green telescope is rotated at the same rate as the earth but in the opposite direction, while the red telescope is not driven.
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  • File:North_pole_february_ice-pack_1978-2002.png licensed with Cc-by-sa-3.0-migrated, Cc-by-sa-3.0-migrated-with-disclaimers, GFDL, GFDL-en
    • 2009-10-09T20:57:56Z File Upload Bot (Magnus Manske) 976x974 (99943 Bytes) {{BotMoveToCommons|en.wikipedia|year={{subst:CURRENTYEAR}}|month={{subst:CURRENTMONTHNAME}}|day={{subst:CURRENTDAY}}}} {{Information |Description={{en|Arctic ice-pack in February This map was initially created using [http:

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current22:08, 16 June 2011Thumbnail for version as of 22:08, 16 June 2011512 × 1,280 (33 KB)CmgleeFix direction of rotation of earth.
21:59, 16 June 2011Thumbnail for version as of 21:59, 16 June 2011512 × 1,280 (33 KB)Cmglee{{Information |Description={{en|Principle of operation of an equatorial mount to keep a telescope pointing in the same direction. The black spots denote rotation axes seen end-on. The green telescope is rotated at the same rate as the earth but in the opp
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