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Michael Buechner | all galleries >> Galleries >> nebulae_and_clusters > M57
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31.7.2010 Michael Büchner

M57

Observatory Sternfreunde Franken e.V., Germany

C14, Optec Reducer F=5.5 (=1958 mm); ST10 XME , L=42min R=G=B je 36 min (alles 2x2 bin); image processing mit Deepskystacker, CCD Stack2, CS Photoshop4
Mean FWHM =3,6"


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