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50 Years of the Lovell Telescope Transcript
50 years of the Lovell telescope Transcript Date: Wednesday, 5 December 2007 - 12:00AM 50 YEARS OF THE LOVELL TELESCOPE Professor Ian Morison The Early days at Jodrell Bank In late 1945 Dr Bernard Lovell (as he then was) returned to Manchester University after working on the development of radar during the war years. His aim was to continue his researches into cosmic rays - highly energetic particles that enter the Earth's atmosphere from outer space. He had the idea that sporadic echoes sometimes received by military radars might be the result of cosmic rays entering the atmosphere and thus radar observations might provide a new way to continue his researches. Radar observations were not practical in the centre of Manchester so he took his ex-army radar system out to the University's Botanical Grounds at Jodrell Bank, some 20 miles to the south. By the middle of December 1945, the system was operating and his team was soon able to prove that the echoes were coming not from cosmic rays but from ionized meteor trails left behind when small particles, released from comets, are burnt up in the upper atmosphere of the Earth. Radar Antenna in the Botany Grounds. The Jodrell Bank Experimental Station. The observations continued and, to house the expanding staff and equipment, the Jodrell Bank Experimental Station was built in the field next to the Botanic Grounds. Lovell realised that a much more sensitive radio telescope would be required to detect cosmic rays and so, in 1947, the researchers built a large parabolic reflector, 66-m across, pointing upwards to observe the sky passing overhead. -
50 Years of the Lovell Telescope Transcript
50 years of the Lovell telescope Transcript Date: Wednesday, 5 December 2007 - 12:00AM 50 YEARS OF THE LOVELL TELESCOPE Professor Ian Morison The Early days at Jodrell Bank In late 1945 Dr Bernard Lovell (as he then was) returned to Manchester University after working on the development of radar during the war years. His aim was to continue his researches into cosmic rays - highly energetic particles that enter the Earth's atmosphere from outer space. He had the idea that sporadic echoes sometimes received by military radars might be the result of cosmic rays entering the atmosphere and thus radar observations might provide a new way to continue his researches. Radar observations were not practical in the centre of Manchester so he took his ex-army radar system out to the University's Botanical Grounds at Jodrell Bank, some 20 miles to the south. By the middle of December 1945, the system was operating and his team was soon able to prove that the echoes were coming not from cosmic rays but from ionized meteor trails left behind when small particles, released from comets, are burnt up in the upper atmosphere of the Earth. Radar Antenna in the Botany Grounds. The Jodrell Bank Experimental Station. The observations continued and, to house the expanding staff and equipment, the Jodrell Bank Experimental Station was built in the field next to the Botanic Grounds. Lovell realised that a much more sensitive radio telescope would be required to detect cosmic rays and so, in 1947, the researchers built a large parabolic reflector, 66-m across, pointing upwards to observe the sky passing overhead. -
URSI Commission J – Radio Astronomy
1 URSI Commission J – Radio Astronomy Jacob W.M. Baars Max-Planck-Institut für Radioastronomie Bonn, Germany Preface The organisation and operation of URSI can be seen as a sailing trip around the world by ten boats, each representing one of the ten Commissions of URSI, that gather at three year intervals in a place on earth decided by the central overseers, the Council. At these General Assemblies the captains of the Commission ships meet with the Council to discuss the experiences of the recent period and make plans for the next. The crews of the ten boats set up their individual meetings to present the scientific discoveries of the last three years to their colleagues who could not fit on the ship and travelled to the harbour to hear the news. Occasionally, crews from more than one boat find common interest in holding joint meetings. Also, individual captains may make landfall by invitation at a suitable place for a conference on a special subject of interest. This procedure has been in place for a hundred years to great satisfaction of the URSI community and with considerable success. It is not unusual to accompany such a centennial with the publication of a book on the history of the organisation. The URSI Centenary Book, of which this chapter is a part, will do just that. But how to write a history of a journey with short highlights every three years and intermediate years of calm? In addition, the highlights, the General Assemblies, tend to be rather similar in structure and there is a danger that the story will become repetitive and rather boring. -
Annex I - “Description of Work”
SIXTH FRAMEWORK PROGRAMME Research Infrastructures Communication network Development Contract for: INTEGRATED INFRASTRUCTURE INITIATIVE Annex I - “Description of Work” Project acronym: EXPReS Project full title: A Production Astronomy e-VLBI Infrastructure Proposal/Contract no.: 026642 EXPReS Date of preparation of Annex I: 19 September 2005 Start date of contract: 1/03/2006 026642 EXPReS – Annex I, ver. 2.0 – Approved by EC on 5/10/2005 1 1. PROJECT SUMMARY........................................................................................................................................................... 4 1.1 ABSTRACT........................................................................................................................................................................ 4 1.2. TABLE 1 - LIST OF PARTICIPANTS ........................................................................................................................................ 5 AARNET ............................................................................................................................................................................... 5 1.3. TABLE 2 - LIST OF ACTIVITIES ............................................................................................................................................. 9 1.4. DELIVERABLES ............................................................................................................................................................ 17 2. OBJECTIVES OF THE I3................................................................................................................................................... -
Jan Kok, President
The Objective View December 2002 Newsletter of the Northern Colorado Astronomical Society Jan Kok, President Longmont Astronomical Society 1st Quarter Moon Public [email protected] 970 266 0318 Viewing Nights, Flanders Park Kimon Berlin, Vice President December 7 [email protected] 970 267 9908 Other Events Gerry Reynolds, Treasurer [email protected] 970 226 0705 Little Thompson Observatory Star Night, Berthoud David Chamness, Secretary and AL Correspondent December 20 Star Night 7 – 10 pm [email protected] 970 482 1794 http://www.starkids.org Tom Teters, Web Site Editor Cheyenne Astronomical Society [email protected] 970 482 5702 December 20 Cheyenne Botanical Garden Dan Laszlo, Newsletter Editor http://users.sisna.com/mcurran [email protected] 970 498 9226 Open House, Chamberlain Observatory, dusk to 10 PM Meetings first Thursday of each month Dec 14 303 871 5172 http://www.du.edu/~rstencel/Chamberlin/ Next Meeting: December 5 7:30 pm Longmont Astronomical Society December 19, Longmont Christian School, 550 Coffman St 3 D Astrophotography: Comets http://laps.fsl.noaa.gov/cgi/las.cgi by Bryan White November 7 Program NCAS Business at 7 pm Open Forum Nominations for Officers 2003 NCAS Members Max Moe demonstrated his dark sky meter, built with a green Meeting directions LED and ammeter mounted in a PVC pipe. He found limiting Discovery Science Center magnitudes of 6.3 at the Pawnee site, and 4.5 in central Fort 703 East Prospect Rd, Fort Collins Collins, at zenith. Dorothy Pillmore showed a map of the moon http://www.dcsm.org/index.html from Japan. Jan Kok read some of the Kanji characters.