Jason Burnfield’s Hydrogen Line Drift Scan Analysis Tutorial for Galaxies outside the Milky Way on YouTube
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https://youtu.be/D4ehWmEBhAE?si=U40XxTs1g43DUv4U
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What is current price of helium for high altitude balloons in UK (April 2026)?
For a high-altitude weather balloon, the cost of helium depends heavily on volume (m³) and whether you buy party-grade cylinders vs industrial gas. Here’s a realistic UK/Europe 2025–2026 picture: 💰…
An USA school STEM project has launched UKRAA PicoMuon detector on a high altitude balloon. They noticed low detection level right up to just before the balloon burst at maximum height, when they saw a high spike in detection? Why might this be?
The observations from the balloon flight can be understood in terms of how muons are both produced and lost as cosmic radiation passes through the atmosphere. When high-energy cosmic rays…
Liquid cooling / temperature-controlled systems
There are quite a few liquid cooling / temperature-controlled systems on eBay and similar marketplaces, ranging from simple DIY Peltier units to proper compressor-based chillers. Below are the most relevant…
What is terminal command on Raspberry Pi to reboot device?
On a Raspberry Pi (running Raspberry Pi OS or most Linux distros), you can reboot from the terminal with: Alternatives Notes
At last! Brian Coleman hydrogen line feed mounted somewhere near focal point on LRO-H2 solar cooker radio telescope
The supports now can be altered in length to optimise focal position.
How to choose a planetarium app for amateur astronomy
Recently I was asked whether I would recommemd the Stellarium planetarium app on the phone. I know little about Stellarium app although many people tell me it is good. This…
How to use 16 V / 83 F supercapacitor module as a clean power buffer for radio / SDR work.
Here’s a practical, no-nonsense way to use that 16 V / 83 F supercapacitor module as a clean power buffer for radio / SDR work. 🔧 Basic idea You want…
The role of amplification in the Nooelec SAWBird H1 LNA
Andy, You are correct that it is mostly an emphasis to your description but the points, although subtle, are I think of important general applicable engineering description in the design…
Shi Cai Speech at Funeral
https://www.astronomy.me.uk/wp-content/uploads/2026/03/Shi-Cai-Photo-Album.pptx