That’s a neat question — it sounds a bit counter-intuitive at first! https://www.astronomy.me.uk/wp-content/uploads/2025/10/1000036614-161025.png Here’s why a corner reflector antenna doesn’t just

Yes — the dimensions of a horn antenna really matter for hydrogen line (1420 MHz, λ ≈ 21 cm) observing. The

I am just about to use the following file on the Solar Cooker Radio Telescope (LRO-H2) as part of a

This is a draft document, and I cannot confirm it works – you also use it at your own risk!

That is the plus for the SDR Sharp > IF Average Plug-in for SDR Sharp > H-Line 3D software sequence,

Collated document I have put together, which I think might tell people how to do this……no promises! I got it

This will not be Milky Way as inside and Doppler shift on the 1420 MHz line too big – about

The short answer is: most computer monitors do not directly emit significant power at 1420 MHz, but they can produce

How to install “.appimage” files in Linux Ubuntu Yes, Linux; the Linux packages are distributed as an “.appimage” for 32-bit

Good question, Andrew — short answer: yes, up to a point, a larger corner reflector will generally improve hydrogen line