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Messages 1 - 16 of total 16 in this topic |
Chewybacca
Trad climber
Montana, Whitefish
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Topic Author's Original Post - Oct 22, 2014 - 06:09pm PT
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Break out your welding mask, we've got a partial solar eclipse on the way.
Here is a link to see the best viewing times in your area, just type your nearest city into the calculator.
http://www.timeanddate.com/eclipse/in/usa/kalispell
Remember to use eye protection.
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Fritz
Trad climber
Choss Creek, ID
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Oct 22, 2014 - 06:54pm PT
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Great News! Thanks for posting!
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Jan
Mountain climber
Colorado, Nepal & Okinawa
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Oct 22, 2014 - 08:57pm PT
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We had a total eclipse of the sun in Okinawa a couple of years ago. It was very dark and definitely impressive and eerie. It makes you realize how much we just take the sun for granted.
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neebee
Social climber
calif/texas
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Oct 23, 2014 - 12:30am PT
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hey there say, chewybacca... thanks so much... i shared on the facebook too, so my family, those in two different states, :))
can do see it too!!
hey there, say, to nita! happy to see you!
getting ready to see the ol' eclipse...
:)
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drljefe
climber
El Presidio San Augustin del Tucson
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Oct 23, 2014 - 07:02am PT
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Thanks for the time table, that's cool.
My preferred way to watch eclipses now is with binoculars.
Even with good polarizers or a welding mask I'd still find myself squinting at the little orb.
The bino trick is fun and safe.
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mouse from merced
Trad climber
The finger of fate, my friends, is fickle.
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Oct 23, 2014 - 07:55am PT
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Too cool for school, doc.
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Leggs
Sport climber
Made in California
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Oct 23, 2014 - 09:03am PT
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My preferred way to watch eclipses now is with binoculars. May I borrow your binoculars, Jefe? (like, at lunch?)
:)
Yes, thank you for the timetable...awesome.
(great photos, y'all)
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Trad
Trad climber
northern CA
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Oct 23, 2014 - 05:46pm PT
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Here's my cheapo photo of today's eclipse via handheld binoculars, right around the max. Despite the low quality you can even see the sunspot! Somebody around here must have a better shot, though?
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Mike Bolte
Trad climber
Planet Earth
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Oct 23, 2014 - 07:31pm PT
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That's nice Trad.
Great views from Santa Cruz. The sunspots were cool.
Adam experienced rapture and was beamed into the Sun
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Mike Bolte
Trad climber
Planet Earth
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Oct 24, 2014 - 09:55am PT
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Ha! our children so quickly eclipse us (get it?)
The photo I posted was taken with a DSLR plus 600mm lens (equivalent magnification of a pair of 8x binoculars). If you want to get a photo like the one you posted you will need to go to a magnification of about 3 times that. Even then you would have to take quite a few short exposure images and hope you get one that is very sharp at an instance of time or use adaptive optics to get an image this sharp. Those features you see in the image are less than 1" in size. You'd have to have a telescope at least 12" in diameter to resolve details at that level.
EDIT: ha! Thanks Ed (below). Very sloppy with my choice of units above particularly since I mixed them so magnificently. The 1" should have been "1 arcsecond" and my 12" should have been "12 inches" for complete unambiguous clarity!
EDIT 2: speaking of that climbing son, he and his friend David fired the NA wall last week
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Chewybacca
Trad climber
Montana, Whitefish
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Topic Author's Reply - Oct 24, 2014 - 09:55am PT
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Awesome photos, thanks for posting them. We didn't get to see the eclipse here do to rain and thick clouds all day, stoopid weather. ;^(
We're going to have another solar eclipse on Aug 21, 2017. I'd love to watch the shadow cross the earth from the space station. I wonder if they have any job openings. 8^)
Thanks again for the photos!
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Gary
Social climber
Desolation Basin, Calif.
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Oct 24, 2014 - 10:19am PT
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I punched a whole in a piece of paper and projected it onto another piece of paper. Works well.
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Chewybacca
Trad climber
Montana, Whitefish
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Topic Author's Reply - Oct 24, 2014 - 11:45am PT
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Here is a short video of the sunspot. Hopefully it will produce some cool auroras without damaging any electronics.
[Click to View YouTube Video]
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Ed Hartouni
Trad climber
Livermore, CA
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Oct 24, 2014 - 12:01pm PT
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hey Mike, you might want to explain your units...
I suspect you've used the double quotes with the standard astronomical meaning... not inches...
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Mike Bolte
Trad climber
Planet Earth
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Oct 24, 2014 - 08:31pm PT
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With adaptive optics correction on a telescope, the spatial resolution of an imaging system is set by the diameter of the primary mirror. For the current generation of solar telescopes the "diffraction limit" of the primary, achieved with adaptive optics, is around 0.15 arcseconds which is around 100 km on the surface of the Sun. The next generation solar telescope at Maui will do about 2.5 times better.
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