Lunar Visibility

Yallop q + Odeh V

Ready

Map overlay uses sea-level calculations. The point result uses the entered elevation.

Selected
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Yallop
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Odeh
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Best Time
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ARCV / DAZ
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Width
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A Easily visible unaided
B Perfect conditions
C May need optical aid first
D Optical aid only
E Telescope-limit / very unlikely
F Not visible
Impossible
Not possible
Out of model range
Unknown
Method and observing caveats

Uses Yallop q and Odeh V first-crescent criteria. Visibility still depends on haze, horizon transparency, eyesight, observer experience, and knowing exactly where to look.

References: Yallop TN 69, Odeh 2004, IAC Accurate Times.