Optical design and verification of the 4mm receiver for the 20m telescope at Onsala Space Observatory
Paper i proceeding, 2018

The work of this research is the design, analysis and verification of the optical performance of a 4 mm receiver channel for the 20 m telescope at Onsala Space Observatory, Onsala, Sweden. The 4 mm (75 GHz) receiver is a newly proposed channel designed to be installed parallel to the existing 3 mm (100 GHz) channel targeting new science at that longer wavelength. Gaussian beam mode analysis is used to produce the fundamental optical design of the system. The design is then analysed more accurately with the physical optics approximation. We report on the comparison of simulation and measurement and verification of the system design.


Onsala Space Observatory

20m telescope

Radio telescopes

Gaussian beams

4mm receiver

Optical design

Physical optics


G. W. Walker

Maynooth University

E. Kalinauskaite

Maynooth University

D. McCarthy

Maynooth University

N. Trappe

Maynooth University

A. Murphy

Maynooth University

Leif Helldner

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium

Miroslav Pantaleev

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium

Jonas Flygare

Chalmers, Rymd-, geo- och miljövetenskap, Onsala rymdobservatorium

Proceedings of SPIE - The International Society for Optical Engineering

0277786X (ISSN) 1996756X (eISSN)

Vol. 10015 99142V

SPIE Astronomical Telescopes and Instrumentation 2016
Edinburgh, United Kingdom,


Acceleratorfysik och instrumentering

Astronomi, astrofysik och kosmologi



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