Yes. On Ubuntu you can disable automatic updates completely, or just stop the update notifications while still updating manually when you choose. Temporary: stop automatic updates Open a terminal and…
https://www.astronomy.me.uk/wp-content/uploads/2026/05/SETI_Horn_Flare_Angle_Calculations-1.docx Using the usual amateur SETI “Horn of Plenty” dimensions: the flare half-angle is: alpha = arctan((A – a)/(2L)) Substituting: alpha = arctan((0.91 – 0.165)/(2 x 1.22)) alpha = arctan(0.3053)…
Not a stupid suggestion at all. Temperature really does matter for detectors like the PicoMuon detector, especially because the silicon photomultipliers (SiPMs) inside produce thermal noise (“dark counts”) that rises…
This was originally posted by Andrew Thomas on muondetector groups.io mailing list 26/5/2026: The PicoMuon will behave oddly and even stop working if it gets too hot. This usually manifests…
A Yagi works by a different mechanism from a dish or horn, but the same underlying principle still applies: For any antenna, gain and effective aperture are linked by: where:…
The commonly quoted lambda/4 criterion is not really a limit on the flare angle itself; it is a limit on the resulting path-length or surface-position error caused by a construction…
On Monday, May 25, 2026 at 1:09:30 AM UTC-7 Andrew Thornett wrote: Can a horn be made larger simply by adding an extension to end of same flare angle, or does…
Answer by Jason Burnfield: On Tue, May 26, 2026 at 1:33 AM Andrew Thornett wrote: Can I ask you for your back of envelope dB calculation on the trace from my…
In ezRA’s ezCon, the plotted values are usually displayed in the raw linear units from the processed data files. If you want to express them in decibels (dB), the conversion…
Admin