Leonids
Hello Folks With our web based display currently unavailable due to on going development and with there being quite a few echoes from the Leonids I have turned on the stream from my receiver via BATC
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Brian
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#1312
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Progress on constructing hardware for 1420.405MHz Interferometry
See https://astronomy.me.uk/progress-on-construction-of-1420-405mhz-interferometer-using-ad8206-chip-16-11-2023 Andy
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Andrew Thornett
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#1311
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Nooelec 1.4GHz mesh dish for H-Line radio observing
Just tested this today and clear hydrogen signal on ezRA suite's ezCol program, demonstrating that this aerial works effectively for hydrogen line detection. Available on amazon.com at
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Andrew Thornett
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#1310
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Deep Science at Boulby Underground Laboratory & Recent endeavors for the search for the H-1 line
Radio Astronomy Section Zoom Monday the 13th Nov 2023 Deep Science at Boulby Underground Laboratory by *Prof. Sean Paling* Recent endeavors for the search for the H-1 line by *Andrew Thornett* Video
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John Berman
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#1309
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Re: Link to my presentation 13/11/23 on H-Line observing in Lichfield given to British Astronomical Association Radio Astronomy Group
Hi Andrew,Thanks v.m. for the link.KRJos¨¦ // P Please consider the environment before printing this document ???????? Jose' de Almeida? -? Cascais - PORTUGAL
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Jose' de Almeida
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#1308
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Re: Link to my presentation 13/11/23 on H-Line observing in Lichfield given to British Astronomical Association Radio Astronomy Group
To clear up confusion - meeting was last night not last Friday! I'm going bonkers! Sent: 14 November 2023 12:25 To: [email protected]; Lester Veenstra <m0ycm@...>; Ted Cline
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Andrew Thornett
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#1307
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Link to my presentation 13/11/23 on H-Line observing in Lichfield given to British Astronomical Association Radio Astronomy Group
Hi I've uploaded this presentation that I gave on 13/1123 to my website - link below if you want to look at it again for any reason. My personal email is
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Andrew Thornett
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#1306
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Meeting last night
Thanks everyone for your kind compliments last night after my talk. If anyone would like a copy of the talk then please email me on andrew@... BW, Andy Sent from Outlook for
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Andrew Thornett
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#1305
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Grindavik TFK
TFK (37.5kHz) went off air at 23:38 last night presumably because Grindavik nearby was also evacuated last night in fear of a volcanic eruption. They've had thousands of earthquakes in the past few
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Mark Edwards
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#1304
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Re: New proportional counter for gamma radiation
As I recall the problem with measuring the solar muons, is the reason one needs two detectors in coincidence to get vertical muons. Otherwise most of what we measure is local radioactivity. Thanks for
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Tony Abbey
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#1303
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Re: New proportional counter for gamma radiation
Thanks Tony for posting this - most interesting. Cosmic rays are mostly the nuclei of Hydrogen and Helium, they are detected at ground level as muons with an average energy of around 6MeV.? The
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Paul Hearn
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#1302
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Re: New proportional counter for gamma radiation
Hi Charley That's an interesting question. I believe most cosmic rays that we see on Earth are not from the sun. Radiation from the sun tends to just ionise the top layers of the atmosphere. However,
By
Tony Abbey
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#1301
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Re: New proportional counter for gamma radiation
Tony, Please excuse my taking the lazy way out instead of doing my homework. Is it feasible to use this detector to monitor and measure Solar Flares? Regards, Charley
By
Charles Hill
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#1300
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Re: Next RAZoom Mon. 13th Nov 19:30 - Dark matter + Search for the H-1
The Zoom link had been sent out.? If you haven't received it, or if you want to be added to the distribution list please contact me. ** *Monday Nov. 13th* ** *19:30 GMT (19:30 UTC)* ** ** ** *Prof.
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Paul Hearn
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#1299
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New proportional counter for gamma radiation
Hi folks I know several of you will have built the BAA radiation counter that we have talked about on this channel although I have never got much proportional response out of mine. I have just seen an
By
Tony Abbey
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#1298
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Re: History of Jodrell Bank
Glad you enjoyed the talk. I think that the financial problems did make Sir B. more wary in the future, as the Mark IV telescope was never built and the Mark V was abandoned when the SRC wouldn't
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Mark Edwards
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#1297
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Re: History of Jodrell Bank
Hi Mark Just watched the video. Thank you for a great presentation. It's amazing how much science was done there. Bernard Lovell must have been a very determined chap to keep pushing back the
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Tony Abbey
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#1296
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Re: History of Jodrell Bank
Sorry that the link I gave for my talk needed a password - I wasn't given one, but they have now put the talk on YouTube here:-
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Mark Edwards
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#1295
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Re: H-line dish and feed
My 3 metre solid dish is almost large enough to limit diffraction losses at 21cm, and gave reasonable results when I tried some quick tests last year, but steering that beast needs a lot of serious
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Neil Smith G4DBN
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#1294
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Re: H-line dish and feed
Surely the important point is that it is a 65cm dish. This is very small for H-line, around 3 wavelengths. Before buying I would read the articles "Hydrogen line observations: from frugal to advanced"
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Melvyn Jones
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#1293
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