After re-erection at Jodrell Bank, the telescope was equipped with Baldwin Electronic Industry (BEI) 16-bit absolute encoders in both azimuth and elevation, together with in-house drive electronics and extra limit switches for enhanced robust operation.
It can be controlled in both azimuth and elevation by a Marconi servo system currently housed in the telescope control cabin, adjacent to the instrument, and is under full computer control (a MicroVAX II). The servo loop time is approximately 250 milliseconds.
The surface is a 6.4m diameter solid paraboloid, with a prime-focus waveguide feed. The telescope can achieve full sky coverage, and maximum drive speeds are 20 degrees per minute in both axes.
Today, the telescope is used for under-graduate training at the University of Manchester. Experiments conducted by students include:
Diameter : 6.4 metres Beamwidth : 2 degrees (approx) Tsys : 100 kelvin (approx) Aperture efficiency : 55% (approx) Polarisation : Single, linear Operating frequency : 1420 MHz (L-band)
|Return to the NRAL / Jodrell Bank Home page|