Zenithal star field and direction of the local plumb line

Basic principle of the determination of the plumb line (Φ , Λ) by

Our Night Sky Introduction to Astronomy

30 Rappresentazione con linee di isofrequenza delle giaciture dei poli

Zenith - Wikipedia

The Celestial Sky: A Coordinate System

Data processing steps of ACSYS (Halıcıoğlu et al. 2016

Burak BAŞOĞLU, Student, Bachelor's, Istanbul Technical University, Istanbul, Department of Geomatics Engineering

Zenithal star field and direction of the local plumb line

Appendix High Altitude Observatory

THE USE OF THE AUTOMATED DIGITAL ZENITH CAMERA SYSTEM IN ISTANBUL FOR THE DETERMINATION OF ASTROGEODETIC VERTICAL DEFLECTION