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Some observers trying to measure the speed of light using two separating Cosmic Watch muon detectors have come up with results faster than speed of light. Are these results possible?
Short answer: no—those experiments are not actually measuring anything travelling faster than light. When Cosmic Watch–style muon setups give “superluminal” results, it’s almost always due to measurement/systematic effects rather than…
Measurements of 150cm solar cooker radio telescope that forms LRO-H2.
I am grateful to Alex Pettit for helping me calculate the dimensions. LRO-H2 Hydrogen Line Radio Telescope: Measurements in cm: Diameter 150.00Depth 24.00Focal Length 58.59 Radius Depth x 0.00 y…
Is there any benefit to using any other type of feed other than cantenna or loop feed for a small amateur radio astronomy dish for hydrogen line work & is there any benefit to adding a sleeve balun on Loop Feed?
Does this mean in practice that there is no practical reason to need any other type of feed other than cantenna or loop feed for a small amateur radio astronomy…
Which are best parts of the Milky Way to observe to test Hydrogen Line Radio Telescope systems?
Information from Alex Pettit: Courtesy of Marcus Leech & CCERA: It is Spot On. Two Bright Areas Dec+40 dg RA 2030 hrs Dec+20 dg RA 0615 hrs On small systems,…
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…
Presentation I gave at SARA Drake’s Lounge with questions I asked the group 19/4/2026
https://www.astronomy.me.uk/wp-content/uploads/2026/04/Andrew-Thornett-presentation-SARA-Drakes-Lounge-190426.pptx
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:…