GBT HI Data

Description:

Contact Person:

Di Li, JPL/Caltech

Telescope:

GBT

Status:

Complete.

Areal Coverage:

5 square degrees

Noise Properties:

1-sigma rms/channel: 0.15 K

Sampling:

On-the-fly mapping and frequency switching with a 1 MHz throw were used together with a data dumping rate of twice the Nyquist sampling rate, i.e. 4 dumps as the telescope moves over a whole beam. The 12.5 MHz total bandwidth mode of the GBT Spectrometer was used with two spectral windows, one at 1420.4 MHz for HI, the other centered at 1666.4 MHz for the two OH lambda-doubling lines (not available here). The spectral resolution is 0.32 km s^-1

Comments on Reduction:

During reduction, frequency-switched data at both frequencies (+/- frequency throw) were treated independently because of instrument baseline stability.

Downloads:

• Dataverse GBT Ophiuchus HI Datacube

Publications:

• None yet