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Playing with the Black Frame and DNG | by Astronomr
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Playing with the Black Frame and DNG

So here's a very similar shot of the moon, same camera, same telescope rig. But this time I shot in RAW format (DNG) thanks to CHDK and then ran the whole mess through a dark-frame removal process ... I notice a small improvement. Still working on a photoshop stack tools set, so may include the dark frame removal in there too ... oh for a better P&S, or even a proper astroCCD *sigh*

 

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Taken on April 21, 2011