Titlebook: Astronomical Equipment for Amateurs; Martin Mobberley Book 1999 Springer-Verlag London 1999 Astrometry.CCD.Observatories.astronomy.instrum

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BLANC

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Fraktale Geometrie — Eine Einführungoney for a year, I could just afford a 60 mm refractor! Saving my pocket money for more than a year was beyond my comprehension and a 60 mm refractor was, to me, a dream telescope, sitting in the window of the local photographic store. To non-astronomers, a telescope . a refractor!

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Die Geschichte der , in Frankreich you get with that?”. Photographs of the Moon produce the same response. If I’m in a picky mood, my unhelpful response might be, “Well… that crater is about sixty miles across and it’s only an inch across on the print, so it’s a . and not a magnification”

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Die Geschichte der , in FrankreichRefracting telescopes (“refractors”) focus light by using a lens (or “object glass”, or “objective”) as shown in Figure 2.1.

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Hervé Marchal,Jean-Marc Stébé,Marc BertierSchmidt-Cassegrains are often referred to as ., a term applied to telescopes which use a mixture of mirrors and lenses to form the image at the focal plane.

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Achtung! „Sensible Urbane Zone“To most beginners in Astronomy, binoculars seem at first to be of very limited use. Surely a telescope is what is required to enjoy astronomy or do useful scientific work? Nothing could be further from the truth.

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