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X-ORIGINAL-URL:https://www.northessexastro.co.uk/
X-WR-CALNAME:North Essex Astronomical Society
X-WR-CALDESC:Promoting Astronomy in Essex
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UID:MEC-e38e37a99f7de1f45d169efcdb288dd1@northessexastro.co.uk
DTSTART:20240221T193000Z
DTEND:20240221T210000Z
DTSTAMP:20240108T120100Z
CREATED:20240108
LAST-MODIFIED:20240206
PRIORITY:5
SEQUENCE:14
TRANSP:OPAQUE
SUMMARY:Monthly Meeting 21 February 2024
DESCRIPTION:Lagrange Points and Kordylewski Clouds\nAbout the Talk\nThis talk introduces the concepts of potential, force and virtual force and shows how this applies to the circular, restricted three-body problem. The history and an overview of the theory and stability of Lagrange Points will be given, several Lagrange Points in the solar system are described and the use of Lagrange Points for observatory spacecraft, e.g. James Webb Space Telescope and Gaia, are explained as well as their use for spacecraft low energy transfer orbits.\nBuilding on this, the talk moves on to describe the life of the Polish astronomer Kazimierz Kordylewski and the history of the elusive Kordylewski Clouds.\nAbout this month’s speaker\nBiography of Dr Paul A Daniels\nBSc (Hons) Astrophysics, Queen Mary College, London\nPhD, “Particle Accretion and the Structure and Evolution of Cometary Nuclei”, Sheffield\nWorked on software for ROSAT (X-ray astronomy satellite) at the Max Planck Institut für Astrophysik, Garching (near Munich), Germany.\nWorked for (now defunct) US company Floating Point Systems and then ICL Defence Systems and gained experience in high-performance computing.\nFreelance IT consultant from 1988 for over 30 years – mainly database design and development\nAllegedly retired since the start of 2019!\nJoined Guildford Astronomical Society in 2006:\n\nJoined the Committee in 2008\nBecame their Webmaster in 2009\nBecame Website and Meetings Organiser in 2011\nBecame President in 2012 up to 2018 when I moved to Norfolk.\nNow an Honorary Member\n\n(Re)Joined the RAS as a Fellow in 2009:\n\nRAS Council member 2016-2019\nRAS Vice-President (A) 2019-2021\nHave served as Chair of IT Working Group and\non the Education and Outreach Committee\nStill active on the Megaconstellation Working Group (Optical)\n\nJoined FAS Council in 2016:\n\nBecame President in September 2017\nStepped down in 2023 but continuing as Interim President until a President is found\n\nCurrently:\n\nA member of the EAS and\nA member of the IAU including the IAU CPS (Centre For The Protection Of The Dark And Quiet Sky From Satellite Constellation Interference).\n\nLiving near Bradenham in Norfolk since August 2018. Enjoying country life and walking the dog.\n \n—-\nAnyone is welcome – beginner or expert – and there is no need to pre-book. A small charge applies to help us cover costs (typically £3 for non-members; £2 for NEAS members; U16s free). Doors open at 7.30pm with the talk starting at 8.00pm.\nNote that if you are using satnav system, the postcode may not take you directly to the hall – please check this Google Maps link if you aren’t sure: https://goo.gl/maps/fNxmg9qnAYm ( https://goo.gl/maps/fNxmg9qnAYm )\n \n
URL:https://www.northessexastro.co.uk/events/monthly-meeting-21-february-2024/
CATEGORIES:Public Lectures
LOCATION:The Henry Dixon Hall, Henry Dixon Road, Rivenhall End, Essex, CM8 3HR
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