WR-14 Waveguide
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The WR14 waveguide (also known as WH14) is a rectangular waveguide used for millimeter-wave applications in the K-band. Here are the key technical specifications: Parameter Value Designation WR14 (WH14) Frequency…
Radio Astronomy
WR-137 Waveguide
The WR137 waveguide is a rectangular waveguide commonly used in the C-band frequency range, particularly for radar, satellite communications, and radio astronomy work just below the hydrogen line. Here are…
WR-90 waveguide
The WR-90 waveguide is a rectangular waveguide commonly used for microwave signals, particularly in the X-band frequency range. Here’s a quick technical summary: Parameter Value Waveguide size (inside) 0.900 in…
Sampling / time resolution (“sample time”) and timing behaviour of the CosmicWatch muon detector.
Here’s what I found on the sampling / time resolution (“sample time”) and timing behaviour of the CosmicWatch muon detector: Key timing / sampling facts Summary & caveats So, in…
How does the flat sides of a corner reflector effectively channel the radio signal onto the waveguide?
That’s a neat question — it sounds a bit counter-intuitive at first! https://www.astronomy.me.uk/wp-content/uploads/2025/10/1000036614-161025.png Here’s why a corner reflector antenna doesn’t just bounce the hydrogen-line radio waves back out into space,…
Dimensions of horn antenna for hydrogen line radio astronomy
Yes — the dimensions of a horn antenna really matter for hydrogen line (1420 MHz, λ ≈ 21 cm) observing. The horn’s shape sets its gain, beamwidth, and impedance match,…
Computer Monitors and 1420 MHz Radio Frequency Interference (RFI)
The short answer is: most computer monitors do not directly emit significant power at 1420 MHz, but they can produce harmonics, local oscillator leakage, or broadband RF noise that can…
Size of corner reflector and performance for hydrogen line observing
Good question, Andrew — short answer: yes, up to a point, a larger corner reflector will generally improve hydrogen line observing, but there are trade-offs. Here’s the breakdown: 1. Collecting…
Using RSPUno for interferometry
To use RSPUno for interferometry, you’ll need to understand both the hardware configuration and the software/data processing workflow. RSPUno is a system derived from the Radio-SkyPipe software but optimized for…
Range of sizes of meteors coming into Earth’s atmosphere
Meteors vary enormously in size, depending on the original meteoroid (the solid body before it enters Earth’s atmosphere). Here’s a breakdown by category: Type Typical Size (Diameter) Description Micrometeoroids <…