The Planet Mars: image taken by Michael Grünanger on January 8th, 2008, 22:13 (Central European Time) in the West Dome of the Vienna University Observatory. Instrument: Refraktor made by Alvan Clark, effective focal length f=10000mm (achieved by a...
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The Planet Mars: image taken by Michael Grünanger on January 8th, 2008, 22:13 (Central European Time) in the West Dome of the Vienna University Observatory. Instrument: Refraktor made by Alvan Clark, effective focal length f=10000mm (achieved by a teleconverter lens). Ca. 800 individual frames have been added up to acquire this image.
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