File:Gemini Observatory Captures Comet ISON Hurtling Toward Uncertain Destiny with the Sun (gemini1303a).tiff

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Captions

Captions

Images of Comet ISON obtained using the Gemini Multi-Object Spectrograph at Gemini North on February 4, March 4, April 3, and May 4, 2013 (left to right, respectively; Comet ISON at center in all images).

Summary[edit]

Description
English: Images of Comet ISON obtained using the Gemini Multi-Object Spectrograph at Gemini North on February 4, March 4, April 3, and May 4, 2013 (left to right, respectively; Comet ISON at center in all images). Technical Specifications: The three images on left are through an r-band filter only, and the color composite on right includes g, i, and r bands. All are integrated for 2 x 45 seconds with the February 4 image integrated for 2 x 75 seconds (increasing the comet’s apparent brightness). During the period of this sequence, the comet shined at about magnitude 15.5-16.5 in visible light. In these images north is up [need to flip image top/bottom] east is left, and the field-of-view is about 2.5 arcminutes across, which corresponds to about 270,000-290,000 miles (435,000-470,000 kilometers) at the distance of the comet. Color composite produced by Travis Rector, University of Alaska Anchorage.
Date 29 May 2013 (upload date)
Source Gemini Observatory Captures Comet ISON Hurtling Toward Uncertain Destiny with the Sun
Author Gemini Observatory/ AURA / Karen Meech (Institute for Astronomy) and T.A. Rector (University of Alaska Anchorage)
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