Astrophysics (Index)About

Green Bank Telescope

(GBT, GB, Robert C. Byrd Green Bank Telescope)
(West Virginia large radio telescope)

The Green Bank Telescope (GBT, sometimes further abbreviated as GB) is a 100-meter radio telescope at Green Bank Observatory (GBO) in West Virginia. It is the world's largest steerable telescope. The current telescope was completed in 2000, replacing the earlier, collapsed, 1962 Green Bank 300ft Telescope (GB300) (likely in its own time called the "Green Bank Telescope"). The current telescope detects frequencies in the range of 290 MHz to 100 GHz, with prime focus and Gregorian receivers, the former for the longer wavelengths. The reflector is off-axis such that the receivers do not block it. Among its present/past instruments:

Back end instruments include VEGAS (Versatile GBT Astronomical Spectrometer) and GUPPI. Recent projects include 21-cm line surveys both within the Milky Way, and extragalactic, e.g., redshifted galaxies and also intensity mapping the DEEP2 field.

(telescope,radio,ground,West Virginia)
Further reading:
2.6mm116GHz480μeVbeginGreen Bank Telescope
1.1m290MHz1.2μeVendGreen Bank Telescope

Referenced by pages:
Breakthrough Listen (BL)
dark sky
Green Bank 140 Foot Telescope
Green Bank 300ft Telescope (GB300)
Green Bank Observatory (GBO)
Gregorian telescope
National Radio Astronomy Observatory (NRAO)
off-axis telescope
phased array
radio telescope