Successful test of LRO-H3 Radio Telescope (Alex Pettit Patch Yagi Aerial)
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At last, successfully got this working! 13-element Patch Yagi tuned to 1420 MHz by Alex Pettit from USA (member of SARA). First light below – ezRA (Easy Radio Astronomy) used…
Processing LRO-H2 (SCRT) Milky Way Map Data 14 April 2025 – 24 April 2025
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…
Monopole vs Dipole Antennae
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…
Testing cable ties to see if they will reduce effectiveness of parabolic reflector waveguide LRO-H2
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…
Latest version of IF Average Plug-in for SDR Sharp software
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
Upgrading waveguide supports and direction pointing indicator on LRO-H2 (SCRT) radio telescope 12/4/2025
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…
ezRA has identified an error in the recorded right ascension for data collected with one of the LRO hydrogen line radio telescopes. How does this error in right ascension affect the azimuth measurement that should be used for ezCol .txt data files?
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…
Poem: Vastly Vexed at Very Large Array
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…
M-Class Flare detected at LRO 31/3/2025 via UKRAA 23.4KHz SID monitor
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…