File:Defocussed star.jpg

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Description
English: SLR with lens 55mm, f/1.8 at full aperture, bulb. Distance for perfect imaging 11 cm from lens, but used to project a 4cm reflector, 20 W, which was located 450 cm from lens.
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Source Own work
Author Glockenklang1

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current20:08, 28 May 2010Thumbnail for version as of 20:08, 28 May 20103,456 × 2,304 (2.55 MB)Glockenklang1 (talk | contribs){{Information |Description={{en|1=55mm, f/1.8, full aperture, bulb. distance for perfect imaging 11cm from lens but used to project a 4cm reflector, 20 W, in 450 cm on the screen. }} |Source={{own}} |Author=Glockenklang1 |Date=28.

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