Resoldering Alex Pettit 21cm Yagi using lead-based solder with Rosin
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we think this aerial is not effective because of poor solder connection. I used lead-free solder and this may have meant that the solder joint was poor, so today some…
Radio Astronomy
Ptarmigan Triffid Dipole Array
Subject: RAG – Triffid Antenna Hi Andy I asked a former colleague from work to help identify your antenna. He had direct oversight of the Ptarmigan and Triffid projects whilst…
Solar Cooker purchased from ebay September 2024
This was mentioned on SARA mailing list – and then I saw someone selling one on ebay UK for £50, unused! This is effectively a 1.5m satellite dish which concentrates…
SARA Scope in Box Package, and ezRA Software Suite used for hydrogen radio mapping experiments at LRO and list of hardware components accessible in UK 14/9/2024.
The hydrogen radio mapping project was produced by the Society of Amateur Radio Astronomy (SARA), based in the USA (https://www.radio-astronomy.org/node/366). Software and instructions for this project can be found below,…
Latest results of processing all available hydrogen data mapping Milky Way using Ptarmigan Array @ LRO 31/10/2024-10/9/2024
Software used: I am incredibly grateful to Ted Cline for his wonderful ezRA suite software, which was used for data collection and analysis here. The data below has not been…
Data from 24 hour drift scan at 40 degrees declination from Lichfield UK 6-7/9/2024 with Alex Pettit 21cm Patch Yagi Antenna
Data requested by Alex for assessing performance of antenna. Click link below to download data: https://www.astronomy.me.uk/wp-content/uploads/2024/09/AP21YAGI-40degs-dec-24hr-drift-scan-06-070924.zip
Very strange output 3 min sampling ezRA with Alex Pettit Patch Yagi 163 degrees azimuth and 77 degrees elevation (approx 40 degs declination) for few days
Graphs coming from this don’t make sense! Andy Download data from this session & my initial plots using ezRA (ZIP file): https://www.astronomy.me.uk/wp-content/uploads/2024/09/Processing-3-min-sample-data-Patch-Yagi-050924.zip My initial plots (processing in ezRA suite):
Live observations of hydrogen line radio observing at Lichfield Radio Observatory presented to the SARA Radio Observing Party 1/9/2024
LRO live presentations. Click on link to view segment from session involving LRO:
Comparison of performance 21cm Yagi vs Ptarmigan array for hydrogen line observation
Data collected using ezRA suite and analysed with same software. Link below to PDF of Ted Cline’s analysis of the results. Andy https://www.astronomy.me.uk/wp-content/uploads/2024/09/Ted_Cline_comparison_AP21YAGIPharmigan_020924.pdf