New Criterion for Lunar Crescent Visibility |
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| Authors: | Mohammad Sh Odeh |
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| Institution: | (1) Arab Union for Astronomy and Space Sciences (AUASS), P.O. Box 141568, Amman, 11814, Jordan |
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| 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.
Vice-President of “Crescents, Calendars and Mawaqeet Committee” of AUASS. |
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| Keywords: | Crescent Moon |
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