Since the violet rays through the objective of the theodolite telescope have a shorter focal length
BRASS TELESCOPE, Charles C. Hutchinson, Boston; length - Apr 26, 2013 | Grogan & Company in MA
3d telescope fraunhofer circa 1826
Fraunhofer in Benediktbeuern - Glassworks and Workshop
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Telescope :.
Antique Troughton and Simms Astronomical Brass Telescope with Fitted Wooden Box at 1stDibs
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WWI Era Tripod Mounted "Century" Telescope by Watson and Sons of London For Sale at 1stDibs
Joseph von Fraunhofer - Wikipedia
Fraunhofer in Benediktbeuern - Glassworks and Workshop
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Telescope by Utzschneider & Fraunhofer of Munich
Fraunhofer and his spectral lines - Jackson - 2014 - Annalen der Physik - Wiley Online Library
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261: Brass Telescope "Utzschneider und Fraunhofer", c. - Nov 20, 2010 | Auction Team Breker in Germany
Since the violet rays through the objective of the theodolite telescope have a shorter focal length
Theodolite - 13-inch x 9-inch, Ertel & Sohn, Munich, Germany, 1850s
A Mogey Restoration - Classic Telescopes - Cloudy Nights
Theodolite - Wikipedia
Theodolite - Wikiwand
Telescope by Utzschneider & Fraunhofer of Munich
