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About: Astronomical filter     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:Whole100003553, within Data Space : dbpedia.org associated with source document(s)

Type: Thingyago:WikicatTelescopeInstrumentsyago:WikicatOpticalFiltersyago:Artifact100021939yago:Device103183080yago:Filter103339643yago:Instrument103574816yago:Instrumentality103575240yago:Object100002684yago:PhysicalEntity100001930yago:Whole100003553 New Facet based on Instances of this Class

An astronomical filter is a telescope accessory consisting of an optical filter used by amateur astronomers to simply improve the details and contrast of celestial objects, either for viewing or for photography. Research astronomers, on the other hand, use various band-pass filters for photometry on telescopes, in order to obtain measurements which reveal objects' astrophysical properties, such as stellar classification and placement of a celestial body on its Wien curve. Filters have been used in astronomy at least since the solar eclipse of May 12, 1706.