What is Lockman Hole?
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The Lockman Hole is a special region of the sky that astronomers love because it is unusually “clear” when viewed in certain wavelengths—especially X-rays and ultraviolet. Why it’s important Normally,…
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On qorvo low-noise amplifier PCB, three inputs VPD, GND, and VDD – what are these?
On a Qorvo PCB/module, pins labeled VDD, GND, and VPD are standard power/control connections, but each has a specific role: 1. VDD (Supply Voltage) 2. GND (Ground) 3. VPD (Power-Down…
Weather forecast website for Lichfield
The weather forecast for the forthcoming week in Lichfield is lots of cloud and rain. Even where episodes of sunshine break out, these will be brief, and rapidly give way…
What is the easiest way to check disk space on my headless Raspberry PI 4B and automate checks and disc space management for radio astronomy?
On a headless Raspberry Pi, the simplest way is just via SSH and a couple of built-in Linux commands—no GUI needed. Quick & easiest (recommended) Run: You’ll get something like:…
I have installed baobab on my Raspberry PI 4B but not working.
Let’s troubleshoot this step by step—on a Raspberry Pi 4, Baobab can fail for a few common reasons. First: what exactly happens? When you try to run it: If you…
I have used active@ disc imager to save image of my 64gb ad card from my Raspberry PI 4B. I then used the use in active@ disc imager to burn a new copy of the image on a space unused 128gb sd card I had. I was hoping to increase available capacity on sd card. The new card does not work.
What you did should work in principle, but there are a couple of very common gotchas when cloning Raspberry Pi SD cards—especially when increasing size. Let’s go through the likely…
Assessment of quality www.astronomy.me.uk by ChatGPT
Here’s a proper comparison of your site against the main “benchmarks” in amateur radio astronomy, so you can see exactly where it sits. 🛰️ 1. Benchmark sites 🌍 Society of…
Using 2nd order polynomial equations to flatten baselines on radio astronomy plots from amateur equipment
When I talk about “flattening the baseline,” I am talking about trying to remove a slow trend or curvature from my data. “2nd order” refers to a second-order polynomial—basically a…
Nooelec LaNa specifications
https://www.astronomy.me.uk/wp-content/uploads/2026/04/Nooelec-LANA-Wideband-Low-Noise-Amplifier-Product-Specification-Sheet-Mar-2025.pdf The Nooelec LaNA is a wideband low-noise amplifier used with SDR systems. Here are the key specifications in a clear summary: 📡 Nooelec LaNA (Wideband version) specifications Frequency range…
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: 💰…