Big Island #2: SACRED HEIGHTS FOR THE EDGE OF THE UNIVERSE AND SACRED COASTAL REFUGE
Read MoreHawaiian snow in the reddish light of the setting sun in the foreground. Poli'ahu, the cinder cone to your left, is considered to be both the embodiment of and the home of Poli'ahu, the snow goddess. The observatories, from left to right, are as follows: Subaru ( http://subarutelescope.org/ ), Japan's national telescope. At 26.9 feet in diameter, its mirror is one of the largest single-piece telescope mirrors made. It took three years to manufacture the blank, and another four years to polish it and prepare it for mounting. The unusual shape was chosen because computer simulations indicated that it would reduce the amount of turbulent outside air entering the enclosure. The central two domes are the Keck 1 and Keck 2 ( http://keckobservatory.org/ ). With mirrors of 33 feet in diameter, these are the largest visible light (and infrared) telescopes in the world. Unlike the Subaru, however, these mirrors are each made up of 36 hexagonal segments, with each of these individually controlled to keep alignment within 4 nanometers (about 1/25,000 the thickness of a human hair). When used together, resolution can be equivalent to what would be possible with a mirror 279 feet in diameter! Each of the 700,000 cubic foot domes stands 8 stories tall. The smaller one to your right is the NASA Infrared Telescope Facility (NASA IRTF) ( http://irtfweb.ifa.hawaii.edu/ ). It has a 10 foot diameter mirror and is used primarily to gather information of use to NASA space programs.
OptimImagery
on May 8, 2009Thanks for the FIVE stars!
t
on May 5, 2009...had I not known the 'where', i would have guessed ANYWHERE but THERE!!...:-D
(greatPhoto)
BeverLi
on April 25, 2009Beautiful memory of how it really was