View Original: | Binocular telescope, by Jan and Harmanus van Deijl.JPG (1988x2658) | |||
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Keywords: Binocular telescope, by Jan and Harmanus van Deijl.JPG Binocular telescope by Jan and Harmanus van Deijl Amsterdam 1789 The novelty and rarity of this type of telescope seems to have determined Van Marum to acquire one It was bought in 1792 from Adriaan van den Ende who had assisted in the construction the objectivesare achromatic and the magnification is 56 diameters own 2011-12-23 13 43 40 AlfvanBeem Cc-zero Instruments in the Teylers Museum Culture photographed by Alf van Beem |