Views from Radio telescopes - USA's VLA, European, Australia

Yang Liwei Rocket · 2005-09-24 12:24:17

I'' put some info in this thread about the RATAN-600 (Russia), Green Bank Telescope and Arecibo, Puerto Rico, and Chinese scientists told us that FAST is going to be built in Karst depression in Guizhou and will greatly help raise China's status in world's astronomy research.

The European Space Agency is set to open a deep space communication antenna in Spain to help track its soon-to-be-launched craft to Venus.

The space agency will inaugurate the 35-metre-diameter radio antenna in Cebreros, Spain, on 28 September, just in time for the October launch of its Venus Express spacecraft.

ESA opened its first 35-metre antenna in New Norcia, Australia, in 2002. It has been dedicated to tracking the Mars Express spacecraft, currently in orbit around the Red Planet.

Yang Liwei Rocket · 2005-09-25 18:03:24

radio is the electromagnetic radiation which has the lowest frequency, the longest wavelength, and is produced by charged particles moving back and forth; the atmosphere of the Earth is transparent to radio waves with wavelengths from a few millimeters to about twenty meters, Earth's atmosphere hides most electromagnetic radiation from space except visible light, certain infrared frequencies and some radio (wavelengths greater than 0.3 metres) waves, radio waveleght can be near the 10^4 and 10^5 cm about the size of buildings - long wavelenght radio waves are blocked. A number of the most massive galaxies were found to be extremely powerful sources of radio waves. The radio specturm runs through many ranges 3Hz, 300 Hz, 30 kHz, 3MHz, 300 MHz, 3GHz and 300 GHz, Radio astronomy led to the discovery of pulsars which pulse regular radio emissions.

APEX, the Atacama Pathfinder Experiment, is a collaboration between Max Planck Institut für Radioastronomie (MPIfR) in collaboration with Astronomisches Institut Ruhr-Universität Bochum (AIRUB) at 50%, Onsala Space Observatory (OSO) at 23%, and the European Southern Observatory (ESO) at 27% to construct and operate a modified ALMA prototype antenna as a single dish on the high altitude site of Llano Chajnantor. The telescope was supplied by VERTEX Antennentechnik in Duisburg, Germany.
http://www.apex-telescope.org/

PaST located in Ulastai, China.
http://web.phys.cmu.edu/~past/images.html
70,000 Square-Meter Telesope area - PaST will generate a detailed, high-resolution image of a five-degree portion of the sky for radio frequencies from fifty to two-hundred Mega-Hertz. This image will contain a timeline that details how ionized the universe was during its early stages of development: from about 200 million years to one-billion years after the Big Bang. This means that PaST will allow cosmologists to see as much as five times closer to the start of the Big Bang than is possible with current optical or radio telescopes so that we can witness such events as the birth of the first stars in the universe.

Tracking Europe's visitor to Venus
http://www.noticias.info/asp/aspComunic … 7807&src=0
The Cebreros site hosted a former NASA station built during 1960-1962, and was primarily used in the sixties and seventies. But in the record time of less than two years, ESA has built its brand new Cebreros deep space ground station.
The Site Infrastructure Manager, Valeriano Claros, likes taking visitors to a nearby hilltop from which one gets the measure of this imposing and elegant white structure pointing skywards, niched in the parched countryside.
"When Spain proposed to provide a site for ESA's second deep space ground station, we decided to leave the region around Madrid for the countryside. Here there is no electrical interference from transmitters or factories. This requirement is paramount when one has to track and control spacecraft travelling hundreds of millions of kilometres away."
The Cebreros facility is a near-identical twin of ESA's New Norcia ground station near Perth. The Australian site, operational in November 2002, has since been regularly used by, for instance, the Mars Express, Smart-1 and Rosetta missions.

EuroLauncher · 2005-11-09 14:12:04

Solar radio telescope erected atop Jeffery
http://www.queensjournal.ca/articlephp/ … ews/story3
Gardiner has been working on this project for a year and a half, along with his teammates Lindsay Smith, Sci ’06, and Robert Carkner, Sci ’05.
After securing a joint grant from the Canadian Fund for Infrastructure/Innovation and Ontario Innovation Trust, Thomson and his team were able to build the Queen’s solar radio telescope to further investigate the problem of solar interference with cell phone reception.
“Our scope listens to the radio frequencies coming out of the sun,” Gardiner explained. “Typical solar radio telescopes measure solar energy output on a large time-scale—about a second. Ours can capture a wave-form by taking samples a million times per second.”

Palomar · 2005-11-09 14:44:10

*My husband and I recently visited the Very Large Array. Will consider rounding up those posts and posting them here. Enjoyable, would like to visit again.

--Cindy

SpaceNut · 2020-11-21 16:27:19

National Science Foundation will begin plans to decommission the 305-meter telescope, which for 57 years has served as a world-class resource for radio astronomy, planetary, solar system and geospace research.

https://www.nsf.gov/

tahanson43206 · 2020-11-21 18:51:22

For SpaceNut re demise of Arecibo ... thanks for making a record of this decision .... It appears the Chinese have picked up the baton for this type of telescope, and other nations are building (or have built) arrays of telescopes.

Hopefully after the US gets it's head back on straight it will have the energy and desire to invest in advanced research technology in some area. For now, it seems (to me at least) that the private sector is carrying the ball, but the energy research labs may be quietly advancing in their specialties.

(th)

SpaceNut · 2020-12-05 14:46:53

It's finally fallen

SpaceNut · 2020-12-31 14:08:00

Puerto Rico commits $8 million to rebuild Arecibo telescope

Its reconstruction is important as a matter of “public policy” and reestablishing the Observatory as a “world-class educational center,” the Governor’s office said.
The National Science Foundation said it would tear down the Observatory as repairs would be too dangerous, although that doesn’t rule out building a new structure in its place.

While the dish is key so will be all of the electronics which I hope are being kept safe...

SpaceNut · 2021-02-06 17:23:17

Apollo 15 landing site is strikingly clear in image captured from Earth BB1drxy7.img?h=450&w=799&m=6&q=60&o=f&l=f

Scientists spent two years developing the technology to take these detailed images of the moon from Earth, and now, they can capture snapshots of lunar objects as small as 16.4 feet (5 meters) across from about 238,855 miles (384,400 kilometers) away.
In the future, the researchers plan to develop the technology further, to the point where they can throw radar signals out to the far reaches of the solar system and capture images of Uranus and Neptune, which at their closest are 1.6 billion miles (2.6 billion km) and 2.7 billion miles (4.3 billion km) from Earth, respectively,

https://public.nrao.edu/news/successful … ary-radar/

Scientists attached a radar transmitter to the Green Bank Telescope (GBT), the largest fully steerable radio telescope on Earth. Thus equipped and aimed at the moon, the telescope could transmit radar signals to the lunar surface. These signals then ricocheted back toward Earth, where they were caught by the NRAO's Very Long Baseline Array, a network of observation stations with large antenna dishes scattered around the U.S.
The NRAO, the Green Bank Observatory and Raytheon Intelligence & Space, the company that developed the radar transmitter, captured the new images of the Apollo 15 landing site in November 2020, while running a proof-of-concept test of the technology. They are now finalizing a plan to develop an even more powerful radar system that can snap high-resolution images of both near-Earth objects and the solar system's outermost planets.
"We've participated before in important radar studies of the Solar System, but turning the GBT into a steerable planetary radar transmitter will greatly expand our ability to pursue intriguing new lines of research,

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#1 2005-09-24 12:24:17

Re: Views from Radio telescopes - USA's VLA, European, Australia

#2 2005-09-25 18:03:24

Re: Views from Radio telescopes - USA's VLA, European, Australia

#3 2005-11-09 14:12:04

Re: Views from Radio telescopes - USA's VLA, European, Australia

#4 2005-11-09 14:44:10

Re: Views from Radio telescopes - USA's VLA, European, Australia

#5 2020-11-21 16:27:19

Re: Views from Radio telescopes - USA's VLA, European, Australia

#6 2020-11-21 18:51:22

Re: Views from Radio telescopes - USA's VLA, European, Australia

#7 2020-12-05 14:46:53

Re: Views from Radio telescopes - USA's VLA, European, Australia

#8 2020-12-31 14:08:00

Re: Views from Radio telescopes - USA's VLA, European, Australia

#9 2021-02-06 17:23:17

Re: Views from Radio telescopes - USA's VLA, European, Australia

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