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1700mm Videos by Popular

250mm Focal length 1700mm Focal Ratio f6.8 *Tube 2011 moon HD.mov

10/24/11
watch in HD please i used no barlows just my HD cam sony on the back of my scope www.youtube.com Primary mirror diameter 250mm Focal length ... tags: (inc. *Tube 12kg 1700mm f6.8 Focal John