There is a concave mirror in the base. You point that at what you want to view. Its focal point is at the end of that arm, where there is a prism, which bends the light around into the eyepiece, perpendicular. It's a Newtonian, but without the tube.
The top illustration is misleading, because while it shows the distant boat, and the inset shows a telescopic view of the boat, the telescope appears to be inclined too high to actually be pointed at the boat.
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timeasmymeasure
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Date: 2010-04-19 01:38 am (UTC)The top illustration is misleading, because while it shows the distant boat, and the inset shows a telescopic view of the boat, the telescope appears to be inclined too high to actually be pointed at the boat.