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Adrian Haiselden
I first joined the BAA in the early 1970s.<br><br> I was also a member of the Guildford Astronomy Society, where I met John Smith, the then head of the BAA Radio Astronomy section. Coming from an electronics background, John encouraged me to build one of his Basic Radio Telescopes. However, only having a small garden, I had no room for the aerials. But it did mean that I spent many happy hours in his shed/observatory, in his garden near Cranleigh, testing my Radio Telescope using his fine selection of aerials. I have a 6” reflector with numerous eye pieces, but unfortunately only have an altazimuth mount.. I rejoined the BAA in May 2020 after a break of thirty or so years. I now live in Gloucestershire. My Current Projects include: Observing SIDs using Spectrum Lab. This project is based on a RAG Zoom training workshop given by Paul Hyde on 22 May 2021. I am using a north-south, homemade 1.8m x 1.8m aerial and an old laptop. I am currently monitoring 19K58 Anthorn, UK; 22K1 Skelton UK, 20K9 Sainte-Assise, France; 22K6 Rosnay, France (currently off-line); and sometimes Isola di Tavolara, Sardinia, but the signal can be very noisy. I observed two, well defined, SIDs on 3rd July 2021. Fluxgate Magnetometer. I had been working on an analogue version of this project for a year or so with little success. I then saw Callum Potter’s presentation of his digital version, using a Raspberry Pi Pico and a Raspberry Pi Zero, on a RAG Zoom conference on 23rd July 2021 and decided this was the way to go. The magnetometer is now up and running, but only on my desk. I now need to bury the Fluxgate and the temperature sensors somewhere (electrically and magnetically) quiet in my garden before I can capture practical results. Results are downloaded from the RPi Zero using the house wifi. Observing SIDs using a UKRAA VLF Receiver. I have a UKRAA 580mm x 580mm loop aerial mounted roughly east–west and a VLF receiver tuned to 23.4KHz DHO38 Ramsloh, Germany. The analogue output is connected to a LabJack (ADC) and then into a Raspberry Pi 3B+ from which files can be downloaded using the house wifi. I have had trouble using this system due to electromagnetic interference emitted by our fridge-freezer. I’ve tried moving the system into the loft and mounting it on an earthed tinfoil sheet, but this has not resolved the problem. I am now considering re-tuning the receiver to an alternative transmitter where the aerial is orientated north-south.This user has not uploaded any images yet.
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