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Old 17-06-2009, 09:45 PM
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AstroJunk (Jonathan)
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Join Date: Jan 2006
Location: Brisbane
Posts: 1,676
Bright stars show up all sorts of interesting effects. Have a look at this image of Sirius A and B I took a couple of years back - the intresting diffraction effect you can see on the horizontal plane is caused by the focusser tube on my newt. It wasn't even in the light path of the mirror!
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