Difference between revisions of "February 7, 2013"
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<em>image by Nicolas Dupont-Bloch, Nantes, France</em><br /> | <em>image by Nicolas Dupont-Bloch, Nantes, France</em><br /> | ||
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| − | I took this last quarter Moon through haze and between clouds. Despite these poor conditions, I was thinking I was lucky because I remembered the early photographers with their low-sensitivity films. I tried to make this image resemble an old-style albumen print, like the fine, warm and high-contrast first quarter [http://www.catchersofthelight.com/catchers/post/2012/06/08/Lunar-Astrophotography.aspx | + | I took this last quarter Moon through haze and between clouds. Despite these poor conditions, I was thinking I was lucky because I remembered the early photographers with their low-sensitivity films. I tried to make this image resemble an old-style albumen print, like the fine, warm and high-contrast first quarter [http://www.catchersofthelight.com/catchers/post/2012/06/08/Lunar-Astrophotography.aspx photograph] by Lewis M. Rutherfurd in 1865. Modern techniques allow a hard but noiseless contrast, unsharp mask and wavelets, and local correction of low-light areas. Thus it's possible to mimic an old-style albumen print, without loss of accuracy of modern digital images. I finally added some artificial noise to render the "film grain".<br /> |
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<em>Nicolas Dupont-Bloch</em><br /> | <em>Nicolas Dupont-Bloch</em><br /> | ||
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<strong>Related Links</strong><br /> | <strong>Related Links</strong><br /> | ||
| − | Nicolas' [http://nicolas.dupontbloch.free.fr | + | Nicolas' [http://nicolas.dupontbloch.free.fr website:] <em>Astrophography from Nantes Under Clouds</em><br /> |
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Revision as of 18:00, 11 January 2015
Albumen Moon
image by Nicolas Dupont-Bloch, Nantes, France
I took this last quarter Moon through haze and between clouds. Despite these poor conditions, I was thinking I was lucky because I remembered the early photographers with their low-sensitivity films. I tried to make this image resemble an old-style albumen print, like the fine, warm and high-contrast first quarter photograph by Lewis M. Rutherfurd in 1865. Modern techniques allow a hard but noiseless contrast, unsharp mask and wavelets, and local correction of low-light areas. Thus it's possible to mimic an old-style albumen print, without loss of accuracy of modern digital images. I finally added some artificial noise to render the "film grain".
Nicolas Dupont-Bloch
Technical Details
Feb 3, 2013. 10-inch Newtonian, a Barlow lens, a red filter and a monochrome CMOS camera (QHY5). The Moon was about 22° high. This is a mosaic of four 200-frame stacks.
Related Links
Nicolas' website: Astrophography from Nantes Under Clouds
