File talk:Comet 1910 A1.jpg

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Origin of the image[编辑]

I cannot find the source of this image, but it appears similar to the photograph from 27 January 1910 reproduced in plate II of Lowell Observatory Bulletin No. 57 (vol. 2, pp. 34–55), at least from the scans at the Astrophysics Data System (the photograph labelled "Jan. 27, 7h 2m–7h 13m M.M.T."). The ADS scan is available at http://articles.adsabs.harvard.edu//full/1912LowOB...2...34L/0000039I003.html , but the contrast used for the images there has been set for reproducing printed text, not photographs, so the photographs are not reproduced well. TowardsTheLight (留言) 19:48, 18 October 2016 (UTC)[回复]

You should ask the uploader. Ruslik (留言) 19:46, 19 October 2016 (UTC)[回复]
取自“https://commons.wikimedia.org/w/index.php?title=File_talk:Comet_1910_A1.jpg&oldid=210258860”