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Date: 06 Oct 2006 18:42:45
From: S.A. Morris
Subject: Cheshire Crescent Moon
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Trying to get a grasp on the when and where of Cheshire/Dry/Smiling
moons.
What I've found so far, but can't confirm if correct.
North Pole - the crescent moon always viewed verticle.
South Pole - the crescent moon always viewed verticle.
Equator - crescent moon always lateral, the Cheshire moon.
Mid-Latitudes - Cheshire [Evenings] Early spring and early fall,
[Pre-dawn] August to ober.
I'd really appreciate some help.
Arthur
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Date: 07 Oct 2006 10:12:35
From: Paul Schlyter
Subject: Re: Cheshire Crescent Moon
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In article <1160185365.592147.116510@m7g2000cwm.googlegroups.com >,
S.A. Morris <SArthurMorris@gmail.com > wrote:
> Trying to get a grasp on the when and where of Cheshire/Dry/Smiling
> moons.
> What I've found so far, but can't confirm if correct.
> North Pole - the crescent moon always viewed verticle.
> South Pole - the crescent moon always viewed verticle.
....on the average and with some deviations, yes. Otoh the only time
you're able to even see the crescent moon from the poles will be in
spring (a month or so before sunrise) and fall (a month or so after
sunset), since in winter the crescent moon will always be below the
horizon, and in summer the sun will always be above the horizon
(making it hard to see the crescent moon). And when the crescent
moon is easily seen from the poles, it won't be "verticle" but tilted
a bit "downwards" -- not at all to become a Chesiere moon, but still
tilted downwards somewhat.
> Equator - crescent moon always lateral, the Cheshire moon.
Again, with some deviations. It will be most lateral during the
months around the solstices. Around the equinoxes, the crescent moon
can deviate as much from a pure Chesire moon as it does from 55 deg
latitude in early spring when closest to a Chesire moon -- this can
happen only for a few years every 18 years though (when the lunar
orbit is near the largest possible inclination to the Earth's
equator, an inclination which varies between 18 and 28 degrees
during an 18-year cycle).
> Mid-Latitudes - Cheshire [Evenings] Early spring and early fall,
> [Pre-dawn] August to ober.
That's when the crescent will appear the moste Chesire. And it
applies to both the northern and the southern hemisphere (of course
in the southern hemisphere, spring occurs around September and fall
around March).
> I'd really appreciate some help.
> Arthur
Check out the national flags of these three nations:
Turkey
Pakistan
Mauritania
With some astronomical knowledge and without any geographical knowledge,
one can judge, from the flags only, which of these countries are most
northward and which is most southward. Despite the look of its flag
though, Turkey is *not* situated in the arctic regions.... :-)
--
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Paul Schlyter, Grev Turegatan 40, SE-114 38 Stockholm, SWEDEN
e-mail: pausch at stockholm dot bostream dot se
WWW: http://stjarnhimlen.se/
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