Zenithal star field and direction of the local plumb line

PROBLEMS OF MODERN GEODESY Contemporary Geodesy: Geophysical

Rasim Deniz's research works Istanbul Technical University, Istanbul and other places

Reference ellipsoid's normal (blue) and plumb line direction

Astronomical Observations at Machu Picchu: Facts, Hypothesis and

M. OZLUDEMIR, Professor (Associate), PhD, Istanbul Technical University, Istanbul, Department of Geomatics Engineering

The Tal-Qadi Sky Tablet - Wikibooks, open books for an open world

Allison TYLER, University of Michigan, Ann Arbor, U-M, School of Information

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Discrepancies of the Ground Coordinates for the 49 Check Points