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Ring around the; MOON!
Topic Started: Jan 12 2006, 10:07 PM (247 Views)
Mark
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HOLY CARP!!!
Posted Image

To capture the huge ring around the moon tonight I had to overexpose the moon and push the camera to ISO 1600 which made it noisy.

The ring is very evident to the naked eye. Our eyes have a wider dynamic range than a camera.
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Aqua Letifer
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ZOOOOOM!
Heyy, great corona picture! :thumb:

FINALLY it's not so carpy out that I can actually see the mooon.

Actually, nevermind. Now it's just quite misty.
I cite irreconcilable differences.
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Mark
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HOLY CARP!!!
The ring around the Moon is caused by the refraction of Moonlight (which of course is reflected sunlight) from ice crystals in the upper atmosphere. The shape of the ice crystals results in a focusing of the light into a ring. Since the ice crystals typically have the same shape, namely a hexagonal shape, the Moon ring is almost always the same size.

Less typical are the halos that may be produced by different angles in the crystals. They can create halos with an angle of 46 degrees.

Moon Ring Weather Folklore
Folklore has it that a ring around the moon signifies bad weather is coming, and in many cases this may be true. So how can rings around the moon be a predictor of weather to come? The ice crystals that cover the halo signify high altitude, thin cirrus clouds that normally precede a warm front by one or two days. Typically, a warm front will be associated with a low pressure system which is commonly referred to as a storm.

It is believed that the number of stars within a moon halo indicate the number days before bad weather will arrive. Give it a try the next time you observe a moon halo.
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***musical princess***
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HOLY CARP!!!
Wow!!

What an amazing photo!!

I love using my telescope but the lenses i have for it are pretty crap and i can't find a decent, fairly local dealer. I'll probably have to get them on-line.

x
x Caroline x
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jgoo
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Awesome photo, Mark!

:thumb:
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Aqua Letifer
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Quote:
 
Moon Ring Weather Folklore
Folklore has it that a ring around the moon signifies bad weather is coming, and in many cases this may be true. So how can rings around the moon be a predictor of weather to come? The ice crystals that cover the halo signify high altitude, thin cirrus clouds that normally precede a warm front by one or two days. Typically, a warm front will be associated with a low pressure system which is commonly referred to as a storm.

It is believed that the number of stars within a moon halo indicate the number days before bad weather will arrive. Give it a try the next time you observe a moon halo.


What superstitious hogwash. I've never heard of anything so ridiculous.

We all know that a ring around the moon during the first night of the full moon cycle signifies the awakening of werewolves. Of course, this applies to both alphas and betas, so it would be very hard to determine the source of any supposed werewolf outbreak. For precaution, I've started to carry around my silver-plated dagger and revolver. I would suggest you all do the same.
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kenny
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Very cool!
I love reading about nature!
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JBryan
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apple
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mooned by Mark
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The 89th Key
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Nice picture Mark! :D

JB...yup! ;)

Apple... :lol:
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big al
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Mark
Jan 12 2006, 10:11 PM
Moon Ring Weather Folklore

It is believed that the number of stars within a moon halo indicate the number days before bad weather will arrive. Give it a try the next time you observe a moon halo.

That's a bit of forklore that my grnadmother taught me, and depending on your visual acuity and the amount of stray sky-light, it's not far wrong. Your weather usualy reaches us 1-2 days later. It was quite clear here in PA last night with the moon shining brightly, but some snow showers are forecast for Saturday.

What is the apparent bright object beneath the moon in the photo? Is it an actual celestial object or an artifact in the photo?

Years ago, I photographed the moon a few times using a 400 mm lens with my SLR. It worked quite well. The exposure is easy to estimate because the illuminated surface is a fully sunlit object. One trick that I liked was to shoot the moon with a longer lens and then double expose the film to place the moon in the sky above the city at night. That usually involved two nights of work, one shooting the moon and another driving to a scenic viewpoint (like Mount Washinton or the West End Overlook in Pittsburgh). If I see a ring tonight I may have to get the camera out and try to capture it. I'm not shooting much film anymore since we got a digital camera a little over a year ago, but the digital camera won't zoom to the point of filling the frame with the moon. If there's a ring, I might try it anyway to see what results I get.

Big Al
Location: Western PA

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-bachophile
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sue
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HOLY CARP!!!
Very cool, Mark!!

By the way, I've really been enjoying your moon avatar; you're looking mighty fine this morning. :smile:
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George K
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Finally
Mark, how long was the exposure?

(there's all kinds of possibilities for a bad joke there, moon, exposure, ring....well you get the idea)

Seriously, how long was the shutter open?
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DivaDeb
HOLY CARP!!!
awesome!
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