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darshahlu
Trad climber
Irvine, CA
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Topic Author's Original Post - Nov 19, 2007 - 02:29pm PT
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Hi guys. My friend Nick and I are planning to climb the South Face of Lone Pine Peak this Saturday. We're going to be approaching under a full moon. I'm wondering if this is going to light the South face of Lone Pine Peak. I recall climbing RNWF of Half Dome during a full moon, but it didn't actually help us any because we were in the shade.
So where does the moon rise from? Does it change with the seasons?
Also, does anyone know what the civil twilight and sun and moon transits are? And why are there two moon rises and moon sets in the data below?
Thanks,
Darshan
Sun and Moon Data for One Day
The following information is provided for Lone Pine, Inyo County, California (longitude W118.1, latitude N36.6):
Saturday
24 November 2007 Pacific Standard Time
SUN
Begin civil twilight 6:11 a.m.
Sunrise 6:39 a.m.
Sun transit 11:39 a.m.
Sunset 4:39 p.m.
End civil twilight 5:07 p.m.
MOON
Moonrise 3:44 p.m. on preceding day
Moonset 6:58 a.m.
Moonrise 4:34 p.m.
Moon transit 12:21 a.m. on following day
Moonset 8:13 a.m. on following day
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marky
climber
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Nov 20, 2007 - 01:55pm PT
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wait, you know where on the horizon the moon will rise, and where it will set?
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Mike Bolte
Trad climber
Planet Earth
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Nov 20, 2007 - 02:30pm PT
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here is another semi-mysterious link.
Lick Keck calendars
the column furthest right is the declination of the moon. +27 means it is about as far north as it gets and will go pretty much right overhead.
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spyork
Social climber
A prison of my own creation
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Nov 20, 2007 - 02:33pm PT
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Interesting topic. This spring I ended up jugging the last two pitches of Leaning Tower in pitch black. I had a headlamp and all, so I was fine.
But the interesting part is that there was close to a full moon, but it rose in the wrong place! Being on the other side of the tower, I got no light from the moon until I was almost done.
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Toker Villain
Big Wall climber
Toquerville, Utah
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Nov 20, 2007 - 02:53pm PT
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Spyork,
REALLY! C'mon, not to insult but, c'mon.
I think the more pertinent discussion is the interesting seasonal shift to the moonrise point that reverse compliments the point of sunrise.
This naturally makes sense when one considers the plane of the ecliptic but is counterintuitive from outdoor experience that is sun based.
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Jerry Dodrill
climber
Bodega, CA
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Nov 20, 2007 - 05:01pm PT
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This is interesting. I've been studying the moon for photographic purposes.
I've always wanted to get a photo of the sun setting through the Arched Rock at Jenner, but it will never happen. Here it is in winter, at the shortest day of the year, when the sun sets farthest to the south. As you move left the arch disappears.
The moon, however, sets much farther south, but in summer. If the fog hadn't come in I'd have gotten the moon through the arch at sunrise, the next day AFTER the full moon.
Now, this image was made looking northwest in December. Moonset at sunrise. (it was frikkin' cold that morning too!)
I've never looked at a chart for declination, but hey, that's a good idea! You gotta take the mystery out of the magic, then luck falls in your lap.
Easy thing to remember: Moon rises 50 minutes later every day. For photographing, shoot moonrise the day before, and moonset the day after the date of the actual full moon.
If you want good moonlight, it's higher earlier in the days before the full moon. Summer = farther south, Winter= farther north. Actual declination may not be necessary with this in mind.
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