Alex many thanks. Wow — seeing the actual copper patterns on the other side of the board completely changes the picture. This isn’t a simple folded‑dipole board at all; it’s…
You have the Nooelec Dish .. I’d use that. Remove the nooelec Dipole & cut down the square tube and use it to hold the Discovery Feed. ( you can…
FIRST POSTED BY PAUL HEARN ON MUONDETECTOR FORUM AUGUST 2026: ‘what’s the point’, but more ‘how does it move beyond the local user’s analysis and, where participants choose to do…
This feed has been shown to be very effective by Alex Pettit (see SARA mailing list). Why is it so good? FROM ADRIAN KLAUSSEL, FIRST PUBLISHED ON THE SARA MAILING…
The link below downloads ZIP file of Royston Morgan’s presentation and associated materials from his talk at the BAA Muon online meeting 17/8/2026: https://www.astronomy.me.uk/wp-content/uploads/2026/08/Royston-Morgan-Materials-his-talk-BAA-Muon-meeting-170826.zip
You can feed a 1420 MHz hydrogen-line horn from the rear panel, but a straight monopole pointing forward down the horn axis would generally be a poor arrangement. The key…
For the 22 GHz water maser (H₂O) line, the laboratory rest frequency is approximately: 22.23508 GHz = 22,235.08 MHz Astronomical maser emission is Doppler shifted by the motion of the…
This document is a combined version containing August 2026 version + 2017 version of manual. https://www.astronomy.me.uk/wp-content/uploads/2026/08/Green-Bank-Observatory-40-foot-RT-User-Guide-Aug-20262017-1.pdf
ADVICE FROM CHATGPT: The Zeiss IM35 was originally designed to accept interchangeable fluorescence reflector/filter blocks, and I’ve found period evidence for several combinations actually used with the IM35. The most…
This is a combined document, containing the latest version of the Manual from August 2026, when I visited the telescope, and the 2017 version of the Manual, which contains some…
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