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Experimental Astronomy

, Volume 18, Issue 1–3, pp 39–64 | Cite as

New Criterion for Lunar Crescent Visibility

  • Mohammad Sh. Odeh
Article

Abstract

A new criterion for lunar crescent visibility has been established using 737 observations, almost half of them obtained by the Islamic Crescent Observation Project (ICOP). This criterion is based on two variables, viz. the topocentric arc of vision and the topocentric crescent width. The new model is able to predict the visibility of the lunar crescent both for naked eye and optically aided observations. From the database we found a Danjon limit of 6.4 degrees.

Keywords

Crescent Moon 

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Copyright information

© Springer Science+Business Media, Inc. 2006

Authors and Affiliations

  1. 1.Arab Union for Astronomy and Space Sciences (AUASS)AmmanJordan

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