
TY  - JOUR
A1  - Ladd, Ned 
A1  - Purcell, Cormac 
A1  - Wong, Tony 
A1  - Robertson, Stuart 
T1  - Beam Size, Shape and Efficiencies for the ATNF Mopra Radio Telescope at 86&#8211;115 GHz
JF  - Publications of the Astronomical Society of Australia
JO  - Publ. Astron. Soc.  Aust.
Y1  - 2005
VL  - 22
IS  - 1
SP  - 62
EP  - 72
KW  - instruments &#8212; interstellar: molecules &#8212; radio sources: lines
UR  - https://doi.org/10.1071/AS04068 
N2  - We present data characterising the performance of the Mopra Radio Telescope during the period 2000&#8211;2004, including measurements of the beam size and shape, as well as the overall beam efficiency of the telescope. In 2004 the full width half maximum of the beam was measured to be 36 &#177; 3&#8243; at 86 GHz, falling to 33 &#177; 2&#8243; at 115 GHz. Based on our observations of Jupiter we measured the beam efficiency of the Gaussian main beam to be 0.49 &#177; 0.03 at 86 GHz and 0.42 &#177; 0.02 at 115 GHz. Sources with angular sizes of &#126;80&#8243; couple well to the main beam, while sources with angular sizes between &#126;80&#8243; and &#126;160&#8243; couple to the both the main beam and inner error beam. Measurements indicate that the inner error beam contains approximately one-third the power of the main beam. We also compare efficiency corrected spectra to measurements made at similar facilities and present standard spectra taken towards the molecular clouds Orion-KL and M17-SW. 
ER  -

