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We see a lot of strange echoes at https://ukmeteorbeacon.org/beaconclient/ but this one is particularly hard to explain. The tail echo is seen by NW H Vpol and the co-located test stream which beams vertically up and is in effect vertically polarised . So this tail echo appears to be linearly vertically polarised. With a Doppler shift of about -28Hz the reflection path length is extending at a constant rate of about 167m/s or 540km/h. The tail echo which lasts for about 10 seconds is narrow ie is not spectrally spread. It is as if a rod like reflector is being carried in the wind and maintaining it's shape as it does so. Has anyone got a better explanation ? Brian
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A nice head echo seen by all 5 of the operational receivers but with the tail echo only seen strongly by the receiver at the Norman Lockyer observatory and weakly at Armagh. Note also the different Doppler shifts observed from the different locations. The receiver marked "Test Stream" is co-sited with the two NW Hampshire receivers ( not as shown on the display ) and beams vertically up. The other 2 receivers at NW Hampshire beam into the volume directly above the transmitter which is about 200km away. We are still looking for I receiver site in Scotland to provide coverage to the North of the beacon. The receiver and antenna will be provided free to Brian
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Hi All, Here is the new addition at LRO (Lichfield Radio Obaervatory, www.astronomy.network) - this radio telescope is built using a 1.5m solar cooker dish. These cost around ?50 plus postage. The feed is my homemade hydrogen-tuned cantenna repurposed but turning it around. Some hammering, sawing, screws and fence paint using ?5 worth of cheap off-cuts of wood from local hardware shop and I have a serviceable mount that allows elevation to be changed. The scope works by collecting drift scans so azimuth does not need to be changed. A Nooelec SAWBird H1 LNA and RTL-SDR Blog SDR and cheap MINI PC from Ebay and Bob's your uncle = a fully functioning 1420MHz radio telescope. After a bit of a competition using members of SARA and my local Rosliston Astronomy Group in Derbyshire, the telescope has been named Dishy McDishFace. For those of you who are aware of my other hydrogen line scope based on a 86cm ex-military Ptarmigan 4x4 band 3 dipole array, that scope has been named The Signal Snatcher. On another point, my laptop is now caught up completing a 3 day processing run on my hydrogen data over last 12 months using new settings in ezCon (part of ezRA - Easy Radio Astronomy suite by Ted Cline). Andy
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FTA2 back on air?
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FTA2 which is normally on 20.9kHz seemed to have come back on air at 10:02 on 6th November. However, the centre of its modulation is now on 21.04kHz. Does anyone know if this is still FTA2 with a shift of modulation by 140Hz or a different transmitter? Mark
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Postponed - RAZoom Fri. Nov. 8th 19:30
We received news last night that Dr. Noel Castro-Segura was involved in a car accident. He is OK but unable to present tonight. We will reschedule this RAZOOM for next year. We wish him a speedy recovery. -- ??? Paul Hearn ?? paul@... ?? RA Section Director ??
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RAZoom Fri. Nov. 8th 19:30 GMTBinary Stars
BAA Radio Astronomy Section meeting. Binary Stars and Stellar Cannibalism Dr. Noel Castro-Segura University of Warwick Astronomy and Astrophysics Group Stars are the building blocks of the universe. The majority of the stars in our galaxy spend their lives associated with a stellar companion, bound by the gravitational pull between them. The population of so-called binary stars encompasses up to 80% of the stars in the galaxy, and approximately half of these systems have an orbital period short enough to induce mass transfer between the two celestial objects at some point in their evolution. This is a zoom meeting, the link will be sent out on Thursday 7th Nov. If you are not on our email distribution list please let me know. Andrew Thomas is our host. -- ??? Paul Hearn ?? paul@... ?? RA Section Director ??
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Is there anyone who logs significant muon events with date and time that I could use for comparison purposes. Brian
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The attached screenshot shows some interesting echoes of meteor events viewed from different directions and with different polarisations. Take a look for yourself https://ukmeteorbeacon.org/beaconclient/. The transmit beacon is due to be off for a time this week end, weather permitting, for it's planned move on the site of the new science centre at the Sherwood Observatory. See https://ukmeteorbeacon.org/Bstatus for it's operational status. Brian
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HAARP Transmission Notice for 15, 16 and 17 October 2024
HAARP will be operating UTC evenings through UTC midnight on 15, 16 and 17 October. A set of three fixed frequencies will be used, so they should be easy to spot in your spectrograms. Please see the attached Notice of Transmission for details including how to send in your reception reports. Good luck! Whit -- Whitham D. Reeve Anchorage, Alaska USA ---
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See attached. Graves 143.048MHz - UKRAA 23.4KHz receiver @ LRO, Lichfield, UK. I can be contacted directly via contact me page on www.astronomy.me.uk for anyone who prefers to talk outside this group. Andy
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Hello Folks. While working on other things I have a second screen on my PC monitoring https://ukmeteorbeacon.org/beaconclient/ and if I see an interesting set of echoes I screen garb it using snipit and save it for later examination. Here is one captured this morning. Three of the receivers are currently at the same NW Hampshire location including the test stream which has an antenna pointing vertically up. We hope to move one of the receivers to Scotland soon to add to the observed reflection geometry. Brian
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The flare was also noted on the magnetometer here in Coventry. Very sharp onset in the magnetic field change. Davd Farn G4HRY
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A pronounced effect from the X9 flare yesterday seen my magnetometer: I saw no significant effect on muon or total counts. (Red - DHO 23.4 kHz, blue - total count, orange - muon count ) An interesting small dip in sferics level, co-incident with the flare: -- Roger Blackwell GM4PMK www.marsport.org.uk
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From: andrew.thornett@... <andrew.thornett@...> Sent: 03 October 2024 20:33 To: sara-list@... Subject: X-class flare caught on UKRAA SID Monitor 23.4 KHz at Lichfield Radio Observatory (LRO) 3/10/2024 Occurred at approx.. 12:18 on 3/10/2024 (note Radio Sky Pipe II below time in UTC not British Summer Time):
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Big solar event in progress
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At midday (UTC) as well. Any magnetic Solar Flare Effects? Cheers Paul Hyde
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Next step in construction of solar cooker radio telescope
https://www.astronomy.me.uk/next-stage-1-5m-solar-cooker-radio-dish-3-10-2024 Sent from Outlook for Android
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X-class flare today
Forgive me if I double posted this - I couldn't see evidence that my previous attempt was successfully sent. From LRO today, the x-class flare, at 23.4 KHz with UKRAA SID Monitor: https://www.astronomy.me.uk/detection-of-x-class-flare-at-lro-03-10-20241218 Sent from Outlook for Android
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Dish available for collection
We have been offered a six-foot solid dish with substantial stand nothing wrong with it. The stand is made with two-inch angle , steel , nut and bolted together. Can be pulled to bits. The dish is aluminium, Used to belong to the post office about forty years ago. If you are interested, please contact me. It will need collecting from Bury in Lancashire. -- ??? Paul Hearn ?? paul@... ?? RA Section Director ??
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Monday 30th Sept. 19:30BST Sao Giao and Prof. Ward-Thompson - Black Holes
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An addition to tonight's programme. Professor Derek Ward-Thompson Director of the Jeremiah Horrocks Institute School of Engineering and Computing Lancaster University. Derek is a part of the Event Horizon team. Derek's research interests lie in the fields of the formation of stars and planets, as well as in the environments surrounding black holes. -- ??? Paul Hearn ?? paul@... ?? RA Section Director ??
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RSGB Convention 11-13/10/2024
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Can I ask whether anyone else beside me are going to RSGB Convention? Apparently, my talk at the International Astronomy Show on mapping Milky Way by radio went down very well, and I have now been invited to give the same again at the RSGB Convention, which I will be doing just after lunch on Sunday. There does seem to be an appetite out there for talks about radio astronomy. Following my IAS talk few weeks ago, (and my previous muon detection talk at Astrofest in Feb 2024), I have now been booked to give: Series of 8 online lectures for a Malaysian Astronomy Group on radio astronomy(!) RSGB Convention Oct 2024. Talks at three other local astronomy groups. So - as all these lectures are being written (I'm halfway through!), if you know anyone who wants a fun and interesting talk on radio astronomy and what amateurs can do then ask them to contact me - details on following URL: https://astrospeakers.org/provider/andrew-thornett So much interest I have had to register myself on above website! The list of lectures on that site needs updating as it only shows 3, and I am now up to 10 on offer. I must say the success of my Astrofest and IAS talks should be largely attributed to the sterling work being done by BAA RAG members manning a stall at each conference. At both conferences, those stalls went flat out with folks asking questions and seeking advice - in fact, I think they may have been the busiest stalls of all! Andrew Thomas and company worked so incredibly hard for 2 whole day at Astrofest and one whole day at IAS, whereas all I needed to do was speak for one hour! Thanks guys! ... And thanks too to all BAA RAG members who have supported me in my radio astronomy journey! Best wishes to all, Andy
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Sat 8:39am
Sat 8:39am