My latest attempt to generate a map of the Milky Way at hydrogen line 1420.405 MHz on LRO-H2 radio telescope. Download data below (ZIP file): https://www.astronomy.me.uk/wp-content/uploads/2025/04/LRO-H2SCRT-Map-Data-14-240425.zip Results from processing in…
Here is an excellent summary of differences between monopole and dipole antennae. This comes from https://resources.pcb.cadence.com/blog/monopole-vs-dipole-antenna and was accessed 16/4/2025: Key Takeaways Dipole (left) vs monopole (right) antenna diagrams Linear…
I used cable ties to locate centre of opening of cantenna waveguide = I tested them in microwave – only very slightly warm after 2 mins suggesting little absorption at…
Very useful for radio astronomy – allows astronomer to integrate data collected in SDR# over a period of time. Download ZIP of latest IF Average plug-in on link below: https://www.astronomy.me.uk/wp-content/uploads/2025/04/IFAverage-Plugin-for-SDR-download-271224.zip
Data I have collected so far suggests I am having some flexure in the waveguide supports which changes as the elevation angle changes. Additionally, my measurement of the elevation is…
More detail on the issue: The ezRA screen output during processing of data collected from LRO-H2 using ezCol had identified that the right ascension was incorrect by -0.2 degrees. The…
Vastly Vexed at Very Large Array Poem (c) by Andrew Thornett April 2025 in the style of Robbie Burnes Vast dishes o’ metal, they stand in a row,Vainly they whisper…
Sudden Ionospheric Disturbances (SIDs) are changes in power level of very low frequency signals detected with simple equipment in our houses that take up very little space and represent the…
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