TV satellite frequencies in the USA
Admin
TV satellite frequencies in the USA vary depending on the satellite, provider, and whether the service is free-to-air (FTA) or encrypted. Here’s a general overview: 🛰️ Main Satellite Bands Used…
Radio Astronomy
Beamwidth, Half-Power Beamwidth, Field of View
The amount of sky covered by a radio telescope is typically referred to as its field of view (FoV). Key Terms: FoV≈λD radians\text{FoV} \approx \frac{\lambda}{D} \text{ radians} where λ\lambda is…
Results LRO-H2 Mapping exercise 11/4/2025-1/6/2025 (processed 1/6/2025)
These are the results so far of my mapping exercise with the 1.5m parabolic solar cooker dish (LRO-H2): Powerpoint Presentation containing slides at bottom of this page: https://www.astronomy.me.uk/wp-content/uploads/2025/06/Results-LRO-H2-Mapping-exercise-110425-010625-010625.pptx Individual slides:
LRO-H1 Map 2 (cf Wikipedia H-Line Map July 2024 proc 260425@2200) – labelled
This version of the map has been relabelled, due to errors in the previous labelling system.
Cheapest way to make a new waveguide monopole
The waveguide in the centre of antennae sich as cantennae are made of a copper quarter wave monopole. The cheapest way to obtain a stiff enough short piece of copper…
First LRO PicoMuon detector weekly variation results 25 May 2025
This graph compares last week’s results with those found at a professional observatory in Finland (latter is neutron flux but gives basis for comparison as muons and neutrons go hand-in-hand).
Easy Radio Astronomy Software (ezRA)
LRO-H3 Radio Telescope (Alex Pettit H-Line Yagi)
Radio observation in hydrogen line (1420MHz)
Comparison of size of peaks on ezCol (ezRA) from LRO-H2 and LRO-H3 in last few days
See Powerpoint below: https://www.astronomy.me.uk/wp-content/uploads/2025/05/Comparison-data-collection-peaks-on-LRO-H2-and-LRO-H3-23-240525.pptx
Ideal thickness for copper feed for cantenna at 1420 Mhz
The ideal thickness (gauge) of copper wire for the feed in a cantenna (typically for Wi-Fi at 2.4 GHz) depends on both practical and theoretical factors, mainly skin depth, mechanical…
X-Class and M-Class Solar Flares detected on LRO UKRAA 23.4KHz Sudden Ionospheric Disturbance (SID) Detector 14/5/2025
I have overlaid data from the SID Monitoring Station (purple) onto my data (red) on picture below (SID Monitoring Station A118 Home Page) Andy
Hi Profile Search
Link below takes you to web-page where you can compare the hydrogen line spectra you have detected with your radio telescope with more professional results. Andy https://www.astro.uni-bonn.de/hisurvey/euhou/LABprofile