BAA RAZoom Fri. 5th June 19:30 BST (18:30 UTC) Observations using modular 3 metre dish.

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Paul Hearn

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Jun 4, 2026, 5:39:14 AM (yesterday) Jun 4
to Society of Amateur Radio Astronomers
SARA Invited .....

Edward Mol Enthusiastic and Competent Amateur Radio Astronomer

Utrecht Netherlands

Observations and instrumentation using home built modular 3 metre L-band dish.

Many amateur radio astronomers wish to have a large dish: after all, the greater the aperture, the better the sensitivity and resolving power. However, a larger dish also means a lot more practical issues, ranging from higher wind load to disgruntled neighbours… furthermore, weatherproofing a radio telescope to set it up outside permanently is challenging, especially in our wet climate. Can we have a 3 metre dish without many of these drawbacks?

Back in 2017 I decided to build a modular 3 metre dish. This dish could be assembled for observation projects during periods of favourable weather. When not in use the parts could be stored in a shed, safe from rain and storms. In this presentation I will cover the construction and evolution of the dish, as well as the advantages and disadvantages of such a modular setup. Observation results will also be presented. If weather allows, a demo showing the observation of the hydrogen line will be performed.

If you wish to join the Zoom and not received the link, please contact me.  Paul Hearn [  pa...@hearn.org.uk ].

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