jeudi 17 octobre 2013

Quelques photos de la comète ISON

 
Scarmato's spatial structure enhancement (using false color) of Gary's Oct 08 stack of the 41 sharpest out of 95 images (30-sec exposure, 11-inch telescope, Cb filter). 
 
 
Complicated conversion from observed brightness to displayed brightness for illustrating location of coma center in relation rest of coma and tail. Median combine of 60 comet-guided 90-second exposures, R filter, 14-inch Celestron, by Whitmer, on 2013.10.16. North up, east left. This cropped image has FOV = 14.7 x 9.9 'arc.

 
Scarmato's spatial structure enhancement (using false color) of Whitmer's Oct 15 stack of the 50 comet-guided images (90-sec exposure, 14-inch telescope, R filter).   

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