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Table 1

Observing and calibration parameters for the MERLIN spectral-line observations of IRAS 19092.

Observational parameters OH masers

Date of observation 4 and 5 April 2003
Antenna used seven antenna
Field centre (2000) α = 19h11m37.40s
δ = 08°46′30.00′′
Rest frequency (MHz) 1665.402
No. of frequency channels 512
Total bandwidth (MHz) 0.5
bandpass calibrator 3C 84
Polarization angle calibrator 3C 286
Phase calibrator 1919+086

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