The difference between a triplet astrograph with a dedicated field flattener and a quadruplet astrograph mainly comes down to optical design, performance, and ease of use. Here’s a clear breakdown:…
Original PowerPoint downloadable from link below. One thing I missed in it was to say that all monitor screens near telescope or aerial should be switched off and linear power…
Original Powerpoint file by myself downloadable from link below. https://www.astronomy.me.uk/wp-content/uploads/2025/07/NanoVNA_Hydrogen_Line_Basics.pptx
Consist of UKRAA Cosmic Watch coincidence pair and separate blue UKRAA Picomuon detector:
At 22 GHz, the most prominent masers are water (H₂O) masers, specifically: 🔹 Water (H₂O) Maser at 22.23508 GHz 🔍 Astrophysical Contexts Water masers at 22 GHz are found in…
To build a 22 GHz water maser receiver, you’ll be targeting the 22.23508 GHz emission line, which is in the K-band of the microwave spectrum. This is advanced but achievable…
For 1420 MHz (the hydrogen line), the best ferrite toroid material is not a typical low-frequency ferrite (like #43 or #61) — these are optimized for lower RF or broadband suppression.…
To change the username on Ubuntu, follow these steps carefully, as doing it incorrectly can cause login or permission issues. Here’s the safe way to do it from a terminal:…
GNU Radio is an open-source toolkit for building software-defined radios (SDRs) and signal processing systems. It’s widely used by hobbyists, researchers, and professionals for real-time signal analysis, radio astronomy, satellite…
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