Nearly full moon looming up behind a reef of clouds -- Photo by Ari Heinze

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Above, the moon is barely dimmed at all, permitting a relatively fast 1/80 sec exposure. Below, the sharp-edged ridge of dense cloud extinguishes it completely.

Date/Time	February 18, 2011, 20:08 CST
Equipment	Home-built eight-inch F/5 Newtonian telescope plus Nikon D3000 DSLR
Settings	Telescope stopped to about F/20 using cardboard mask. Film speed set to 800 ISO. Exposure time 1/80 sec. White balance auto.
Image processing	Essentially none. Resized for web.
Image dimensions before resizing	3872x2592
Focus	Fair: slight blurring is obvious in the full-resolution raw image.
Motion blur	Insignificant or absent.
Image noise	Moderate: typical for the film-speed setting.
Other technical comments	None.

Copyright 2011 Ari Heinze: all rights reserved.

However, requests for any reasonable use will likely be promptly granted by email.

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