Radio observing M33 with small dishes
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This involves looking to detect the 21-cm (1.42 GHz) neutral atomic hydrogen (HI) line. Mapping extragalactic hydrogen with a small backyard dish is incredibly challenging, but is possoble. It was…
References relevant to radio observing of M33 with small dishes
From Jason Burnfield. These references support Jason’s presentation on the Hydrogen Line meeting on 6/7/2026 found on the British Astronomical Association YouTube channel.
What is the Virgo radio astronomy software, who produces it, what is it used for, and where would I find it and any other material about its use?
“Virgo” in radio astronomy most commonly refers to a software package for running and analysing small radio telescope data using SDRs (software-defined radios)—not a single instrument or observatory. It is…
Chip sets used in the NESDR SMARTee vs RTL-SDR V4
Here are the actual chipsets inside both devices, stripped down to the essentials: 📡 RTL-SDR Blog V4 Uses: 👉 So the V4 is basically: R828D + RTL2832U This combination is…
What coaxial cable gives 6dB over 25m?
It depends strongly on frequency (coax loss is frequency-dependent), but assuming you mean something in the VHF–UHF / radio astronomy range (e.g. ~1.4 GHz): To get ~6 dB over 25…
What is an FTP cable, as used on the AAA-1C Amplifier for VLF RF?
An FTP cable usually stands for Foiled Twisted Pair Ethernet cable. It is similar to ordinary Ethernet cable, but it has an additional foil shield wrapped around all four twisted…
My SD card on my UKRAA PicoMuon Muon Detector crashed and would not create new CSV files – just said “none” on filename. How I sorted it out.
My UKRAA PicoMuon detector stopped saving CSV data files on to the 64GB SD card plugged into it. I realised the SD needed to be re-formatted. The PicoMuon requires the…
What does compress do in Ubuntu file manager?
In the Ubuntu file manager (usually Files (GNOME Files), also called Nautilus), Compress creates a single archive file containing the selected files and folders. It does not normally reduce the…
Problem and solution: RTL-SDR Blog V4 SDR does not work with default driver in many Linux distributions whereas RTL-SDR V3 SDR does work. This post provides the answer on how to get V4 to work.
Solution and conclusions: After multiple tests, the conclusions are as follows: 1) In many Linux distributions (mine is Alamalinux 9), the default driver is rtl-sdr-v-0.6. With this driver, RTL-SDR-v3 works…
Monthly data from UKRAA PicoMuon detector at LRO 2/7/2026
From the month data folder (sub-folder of “processed” on the Raspberry PI running the PicoMuon muon detector). https://www.astronomy.me.uk/wp-content/uploads/2026/07/month.zip