by– Seth Shostak, Senior Astronomer
It’s now the biggest single-dish radio telescope on Earth. Settled down in the bumpy karst of China’s Guizhou province, about 1200 miles southwest of Beijing, this newest instrument for studying the heavens is very similar in design to the famed Arecibo dish, renown both for its science accomplishments and its performance in two popular films, “Contact” and “Goldeneye.”
But FAST, the Five hundred meter Aperture Spherical Telescope, is Arecibo on steroids. The latter has a dish diameter of 300 meters, so FAST is, in principle, almost three times more sensitive. Put another way, it can reach 70 percent farther into space with the same sensitivity, which could increase the number of “targets” within its purview by roughly 4.6 times.
These are merely brute-force consequences of FAST’s size, however. This new telescope, which is younger than its Puerto Rican cousin by more than a half-century, is also able to see more of the sky – up to 40 degrees from its “straight overhead”, or zenith, pointing. While Arecibo can track objects for as much as 40 minutes, FAST can do this for as long as 6 hours. That would gain it another factor of three advantage in sensitivity…..READ MORE
Review
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Silphase R1 receiver [ VIDEO ]
Silphase R1 receiver. Telescoping antenna 1.15m. Location is city center Warsaw, Poland. Outside temperature +4 Celsius degrees. Frequency 1413 kHz. I... Read more
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Antenna
SUPER VERTICAL 8 ULTRA HF 4-6-10-11*-12-15-17-20-30-4
Vertical-Array is proud to present the vertical 8-bands HF 8 “SV 8 ” antenna. The SV8 working in HF for 4-6-10-11-12-15-17-20-30-40... Read more
$35 Airspy YouLoop Passive Antenna Review
HF Portable & Flexible Receive Loop Antenna Covers HF frequencies (10 kHz to 30 MHz) Usable on VHF up to 300 MHz as a folded Dipole Maximum power... Read more
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