A Dark Sky Over Sequoia National Park (APOD 2009 August 27)

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Expand view Topic review: A Dark Sky Over Sequoia National Park (APOD 2009 August 27)

Re: A Dark Sky Over Sequoia National Park (APOD 2009 August

by DavidLeodis » Fri Aug 28, 2009 4:40 pm

Thanks bystander. Knowing where to look I can now discern what is likely to be the satellite trail above the hut. At least I got M31 (Andromeda galaxy) right! :)

Re: A Dark Sky Over Sequoia National Park (APOD 2009 August

by bystander » Fri Aug 28, 2009 3:51 pm

There is a streak left of what I think may be M31 that could be the satellite.
There is a streak left of what I think may be M31 that could be the satellite.
Sequoia_NPS_M31.JPG (19.42 KiB) Viewed 1062 times
There's also a streak directly above the cabin, half way up the sky.
There's also a streak directly above the cabin, half way up the sky.
Sequoia_NPS_sat.JPG (18.91 KiB) Viewed 1059 times

Re: A Dark Sky Over Sequoia National Park (APOD 2009 August

by DavidLeodis » Fri Aug 28, 2009 1:45 pm

Great panoramic view. I clearly though do not have a "discerning eye" as I cannot make out the satellite trail. I think I may be able to discern the Andromeda galaxy as the smudge above the top of the cloud bank getting close to the left edge of the image. There must be great views from the hut, but I hope its heated in there. :)

Re: A Dark Sky Over Sequoia National Park (APOD 2009 August

by emc » Thu Aug 27, 2009 4:50 pm

U Messn wit me

Actually, the digitally stitched panorama does look a bit like a mushroom cloud
Wikipedia wrote:David H. Frisch ( March 12, 1918- 1991) was an American physicist who helped develop the atom bomb in World War II and later became active in the disarmament movement.

A Dark Sky Over Sequoia National Park (APOD 2009 August 27)

by neufer » Thu Aug 27, 2009 2:38 pm

http://antwrp.gsfc.nasa.gov/apod/ap090827.html wrote:
Explanation: In the foreground, angular boulders populate Mt. Whitney's summit while in the distance, just below the horizon, peaks from the Sierra Nevada mountain range are visible. Sky sights include light pollution emanating from Los Angeles and Fresno, visible just above the horizon. Dark clouds, particularly evident on the image left well above the horizon, are the remnants of a recent thunderstorm near Death Valley.
http://antwrp.gsfc.nasa.gov/apod/ap080713.html
http://antwrp.gsfc.nasa.gov/apod/ap020410.html

http://en.wikipedia.org/wiki/Mount_Whitney wrote:
<<Mount Whitney is the highest summit in the contiguous United States with an elevation of 4,421 m. It is located at the boundary between California's Inyo and Tulare counties, just 122 km west of the lowest point in North America at Badwater in Death Valley National Park (86 m below sea level). The eastern slope of Whitney is far steeper than its western slope. This is because the entire Sierra Nevada is result of a fault-block that is analogous to a door: the door is hinged on the west and is slowly rising on the east. The rise is caused by a normal fault system that runs along the eastern base of the Sierra, below Mount Whitney. Thus, the granite that forms Mount Whitney is the same as the granite that forms the Alabama Hills thousands of feet below. The raising of Whitney (and the downdrop of the Owens Valley) is due to the same geological forces that cause the Basin and Range Province: the crust of much of the intermontane west is slowly being stretched. The granite that forms Mount Whitney is part of the Sierra Nevada batholith. In Cretaceous time, masses of molten rock that originated from subduction rose underneath what is now Whitney and solidified underground to form large expanses of granite. In the last few million years, the Sierra has started to rise. This has enabled glacial and river erosion to strip the upper layers of rock to reveal the resistant granite that makes up Mount Whitney today.

In July 1864, the members of the California Geological Survey named the peak after Josiah Whitney, the State Geologist of California and benefactor of the Survey. During the same expedition, geologist Clarence King attempted to climb Whitney from its west side, but stopped just short. In 1871, King returned to climb what he believed to be Whitney, but having taken a different approach, he actually summited nearby Mount Langley. Upon learning of his mistake in 1873, King finally completed his own first ascent of Whitney, but did so a month too late to claim the first recorded ascent. A month earlier on August 18, 1873, Charles Begole, A. H. Johnson, and John Lucas of nearby Lone Pine, became the first to reach the highest summit in the contiguous United States. As they were fishermen, they called the mountain Fisherman's Peak. But in 1891, the United States Geological Survey decided to recognize the earlier name of Mount Whitney. The name Whitney has remained, resisting a movement after World War II to rename the mountain for Winston Churchill. Residents of Lone Pine financed the first trail to the summit, engineered by Gustave Marsh, and completed on July 22, 1904. Just four days later, the new trail enabled the first recorded death on Whitney. Having hiked the trail, U.S. Bureau of Fisheries employee Bryd Surby was struck and killed by lightning while eating lunch on the exposed summit. In response to this event, Marsh began work on the stone hut that would become the Smithsonian Institution Shelter, and completed in it 1909.>>
  • Speculate on the Mu-Meson experiment as performed
    between Mt. Whitney (14,505 feet) & Badwater(-282 feet):

    1) How much iron should be used at each place?
    2) What should the hourly Mu-Meson counts be?

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