Sextant telescope with a zoom feature
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United States of America Patent
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Issued Date -
Jan 22, 2015
app pub date -
Jul 20, 2013
filing date -
Jul 20, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Sextant telescope with a zoom feature is a device in which one of two available magnification settings is selected by repositioning an internal lens between two mutually conjugate locations. An optional reticle of a specialized pattern helps the proper alignment of the observed horizon and celestial bodies in the field of view of the telescope for easier and more accurate measurements; the placement of the reticle in the first focal plane ensures proper scaling of its apparent size with telescope magnification.
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