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My new map (below). In this new map, I felt that only two arms (Perseus and Outer Arms) could be

https://www.astronomy.me.uk/wp-content/uploads/2025/04/ezRA_ProgramsData_from_LRO-H1_RT_250425.zip

At last, successfully got this working! 13-element Patch Yagi tuned to 1420 MHz by Alex Pettit from USA (member of

My latest attempt to generate a map of the Milky Way at hydrogen line 1420.405 MHz on LRO-H2 radio telescope.

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:

I used cable ties to locate centre of opening of cantenna waveguide = I tested them in microwave – only

Very useful for radio astronomy – allows astronomer to integrate data collected in SDR# over a period of time. Download

Data I have collected so far suggests I am having some flexure in the waveguide supports which changes as the

More detail on the issue: The ezRA screen output during processing of data collected from LRO-H2 using ezCol had identified