Articles on extreme lunar crescents
www.mondatlas.de: Version of 19. May 2008
The lunar crescent at an elongation of 5.0°, captured at 08:40 MESZ (UT+2) on 15. June 2007, 3hours 27minutes after (geocentric) conjunction.
The image above shows the lunar crescent at an elongation that had not previously been acchieved from the ground and was even considered impossible, due to the "Danjon limit". The following articles give more information on the techniques used to capture such extreme lunar crescents.
Details on the Lunar crescent observations in June 2007, images, videos, descriptions, including the world-record image.
How 2 capture extreme lunar crescent images, a article on the difficulties and the techniques used.
Processing of extreme lunar crescent images, description of the individual processing steps used on the images.
Thoughts on sighting extreme lunar crescents
Thoughts on the Danjon limit
Some external Links
Article on extreme crescents at Lunar Picture of the Day by Jim Mosher
Article on the Danjon Limit by Jim Mosher
Discussion on thin crescents at the Cloudy nights forum, with a lot of other references
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