GBT Commissioning Review – Tuesday, November 12, 2002

GBT Status: Current Observing Capabilities

GBT Commissioning Review – Tuesday, November 12, 2002

Telescope Performance - Pointing

All-sky pointing rms ~ 10”

Tracking stability rms ~ 2”(5” peak-to-peak)

GBT Commissioning Review – Tuesday, November 12, 2002

Telescope Performance – Focus Tracking

Empirical Model

PF (800 MHz)

Gregorian (X-band)

GBT Commissioning Review – Tuesday, November 12, 2002

Telescope Performance - Surface

70% efficiency at long wavelengths

~60% efficiency at 20 GHz

GBT Commissioning Review – Tuesday, November 12, 2002

Frequency Coverage

GBT Commissioning Review – Tuesday, November 12, 2002

Observing Modes

Pulsar(SP; BCPM; GBPP)

Spectral Line(SP; Spectrometer)

Continuum (DCR)

Radar (PFS)

VLBI (VLBA)

Camilo et al. (2002)Lockman (2002)

GB Staff

Campbell et al.

GBT Commissioning Review – Tuesday, November 12, 2002

Spectrometer Modes