File:Comet Brorsen-Metcalf by E.E. Barnard on 22 October 1919.jpg
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editDescriptionComet Brorsen-Metcalf by E.E. Barnard on 22 October 1919.jpg |
English: Comet Brorsen-Metcalf by E.E. Barnard on 22 October 1919, 16h51m CST. Exposure 24 minutes. Made with the 10-inch lens of the Bruce telescope of Yerkes Observatory. |
Date | |
Source | https://adsabs.harvard.edu/pdf/1920ApJ....51..102B |
Author | Edward Emerson Barnard |
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editPublic domainPublic domainfalsefalse |
This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1929.
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Note: This tag should not be used for sound recordings.PD-1923Public domain in the United States//commons.wikimedia.org/wiki/File:Comet_Brorsen-Metcalf_by_E.E._Barnard_on_22_October_1919.jpg |
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