Came across a great article about arecibo observatory in the
Posted: 07-28-2003 10:26 PM
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Came across a great article about arecibo observatory in the
Page 1 of 1
Posted: 07-29-2003 04:04 AM
Great article, Tracker - I had no idea Arecibo was so complex and dramatic.
Posted: 07-29-2003 02:43 PM
very interestinc Article
and Greetings from Germany to al
regards
Sir Ulli
(Planet3DNow! Member)
ALFAThe Arecibo L-band Feed Array (ALFA) is a seven feed system that will allow large-scale surveys of the sky to be conducted with unprecedented sensitivity using the 305-m Arecibo telescope in Puerto Rico. The NAIC Arecibo Observatory telescope, operated by Cornell University for the National Science Foundation, is the largest and most sensitive single dish radio telescope in the world and is used to study large numbers of sources that are too faint to be seen with other telescopes. In the past, use of the telescope as a survey instrument has been limited by the relatively small field of view in a single observation. ALFA, operating near 1.4 GHz, will consist of a cluster of seven cooled dual-polarization feeds, a fiber-optical transmission system, and digital back-end signal processors. The system will enable deep surveys for a variety of objects in the Milky Way Galaxy and of other galaxies for probing cosmology. As such, the multibeam system will have a broad appeal to astronomers from all over the world.
and Greetings from Germany to al
regards
Sir Ulli
(Planet3DNow! Member)
Posted: 08-01-2003 10:43 PM
Hello, Sir Ulli !! Nice to have you visit and say hello -
Posted: 08-01-2003 11:55 PM
Excellent article, Tracker3, I don't know how that one slipped by me!
Mark
Mark
Posted: 08-19-2003 10:40 PM
Very informative article, Tracker3. I especially liked the paragraph comparing the big dish to other structures:
Quote from article
"The dish has as much area as the lake at New York’s Central Park (18 acres). The reflected radio signals are collected by instruments on a triangular platform that hangs 45 stories above the dish, which at 700 tons weighs more than the international space station ever will. That platform is suspended from three reinforced concrete towers that rise higher than the towers on the Brooklyn Bridge (365 feet above the ground vs. 276 feet above the water). And It was built in the '50s and opened in the '60s. I'd love to take the tour.
Quote from article
"The dish has as much area as the lake at New York’s Central Park (18 acres). The reflected radio signals are collected by instruments on a triangular platform that hangs 45 stories above the dish, which at 700 tons weighs more than the international space station ever will. That platform is suspended from three reinforced concrete towers that rise higher than the towers on the Brooklyn Bridge (365 feet above the ground vs. 276 feet above the water). And It was built in the '50s and opened in the '60s. I'd love to take the tour.
Seth Shostak on C2C tonight
Posted: 08-19-2003 11:52 PM
Seth Shostak will be on C2CAM tonight...make sure you're all listening...
"One of the topics tonight's guest, Seth Shostak, the Senior Astronomer for SETI, will be talking about, is the new Allen Telescope Array, now under construction (pictured above). The facility at the Hat Creek Observatory on a remote patch of Northern California land, will be a veritable "antenna orchard," said Shostak, containing 350 small radio telescopes all working together to greatly expand SETI's "stellar reconnaissance.""
.......that from C2CAM website........
Mark
"One of the topics tonight's guest, Seth Shostak, the Senior Astronomer for SETI, will be talking about, is the new Allen Telescope Array, now under construction (pictured above). The facility at the Hat Creek Observatory on a remote patch of Northern California land, will be a veritable "antenna orchard," said Shostak, containing 350 small radio telescopes all working together to greatly expand SETI's "stellar reconnaissance.""
.......that from C2CAM website........
Mark
Posted: 08-20-2003 07:37 AM
Thanks mark,
That allen array is an impressive site. Has anyone seen anything yet on the release date for the seti 8 bit data crunching program to handle that new data stream?
That allen array is an impressive site. Has anyone seen anything yet on the release date for the seti 8 bit data crunching program to handle that new data stream?
Posted: 08-20-2003 07:44 AM
Dale, yeah I have known about the observatory since I was a kid in high school (a decade ago). I knew it was big, but that part of the article really lets you know exactly HOW BIG. I was impressed with that part of the article as well because it really puts the size into prospective for me also.