Welcome to NEMETODE

Network for Meteor

Triangulation and Orbit Determination

Scientific Results

Published Papers

Alex Pratt, The Quadrantids & December alpha Draconids 2012-2019: Multi-year meteor videography, J. Br. Astron. Assoc. 130, 6, (2020 December).

Alex Pratt, William Stewart, Allan Carter, Denis Buczynski, David Anderson, Nick James, Michael O’Connell, Graham Roche, Gordon Reineke, Michael Morris, Jeremy Shears, Mike Foylan, David Dunn, Ray Taylor, Frank Johns, Nick Quinn, Steve & Peta Bosley, Steve Johnston, Geminids 2012-2015: Multi-Year Meteor Videography, J. Br. Astron. Assoc. 127, 2, (2017 April).

Alex Pratt, WIlliam Stewart, Mike Foylan, David Anderson & Michael O'Connell, Quadrantids 2014 - Multi-station Meteor Videography, J. Br. Astron. Assoc. 125, 6, (2015 December).

Alex R. Pratt, WIlliam Stewart, Mike Foylan, Leonard Entwisle & Michael O'Connell, Perseids 2013 - Multi-Station Meteor Videography, J. Br. Astron. Assoc. 125, 4, (2015 August). Supplementary image availble here.

William Stewart, A Fireball over Central Scotland on 14th October 2013, J. Br. Astron. Assoc. 125, 2 (2015 April). Smoke-trail animation (at 0.15s per frame) is available here. Original imagery is courtesy of Marcus McAdam, his full frame animation is available here. David Anderson's video of the event is here while the complete version of Figure 7 (including the arrow) is here.

Alex R. Pratt & William Stewart, Eta Aquarids 2013 - Dual Station Meteor Videography, J. Br. Astron. Assoc. 125, 1 (2015 February)

Alex R. Pratt & William Stewart, Taurids 2012 - Dual-Station Meteor Videography, J. Br. Astron. Assoc. 124, 6, (2014 December).

William Stewart, Recordings of "Sprites" by Video Meteor detection Cameras, J. Br. Astron. Assoc. 124, 4, (2014 August).

William Stewart, The Isle of Lewis Fireball of 2013 October 14, J. Br. Astron. Assoc. 124, 2, (2014 April).

William Stewart & Alex R. Pratt, The United Kingdom Fireball of 30th March 2013: Observation and Analysis using NEMETODE and Visual Data, WGN, the Journal of the IMO 41:6 (2013, December).

William Stewart & Alex R. Pratt, A Modern Video Meteor Detection System and Network - Overview and Typical Costs, J. Br. Astron. Assoc. 123, 6, (2013 December).

Alex R. Pratt & William Stewart, Geminids 2012 - Dual-Station Meteor Videography, J. Br. Astron. Assoc. 123, 6, (2013 December).

William Stewart, Alex R. Pratt & Leonard Entwisle, NEMETODE: The Network for Meteor Triangulation and Orbit Determination. System Overview and Initial Results from a UK Video Meteor Network, WGN, the Journal of the IMO 41:3 (2013, June).

Alex R. Pratt, WIlliam Stewart & Leonard Entwisle, Perseids 2012 - Multi-Station Meteor Videography, J. Br. Astron. Assoc. 123, 3, (2013 June).

Alex R. Pratt & WIlliam Stewart, 2013 Mar 30 Fireball/Bright Meteor, The Astronomer, Vol 49 No 588 (2013 April).

Map (Updated 27th August 2014)

In order to get a clearer picture of which parts of the skies over the British Isles have camera coverage we've pulled togther this map. Please get in touch if you spot any errors / omissions.

Data Archive

We're working through a re-analysis of some of our 2010 data and the initial part of the dataset is available here.

Our 2012 dataset (April to December) is available here.

Our 2013 dataset (January to December) is available here.

Our 2014 dataset (January to December) is available here.

Our 2015 dataset (January to December) is available here.

Our 2016 dataset (January to December) is available here.

Our 2017 dataset (January to December) is available here.

Our 2018 dataset (January to December) is available here.

Our 2019 dataset (January to December) is available here.

2020 is coming soon ... just finishing up the analysis and collating the results. .

Other Results

During the summer of 2012 NEMETODE identified a problem with UFO Orbit whereby the UK Map was not displaying the ground track, height or velocity of multi-station meteors. This was reported to SonotaCo (the author of the UFO Software Suite) on 09th August 2012 and he quickly identified a bug with negative longitudes (degrees West). SonotaCo issued UFO Orbit v2.27 which fixed the problem and enabled the creation of UK Ground Maps with annotated meteor data. This has allowed NEMETODE (and other UK groups) to produce ground tracks and orbital plots.

Hardware

While datasheets for most hardware items can be readily found on the web, those for the Cosmicar / Pentax EX-ASP Auto-Iris Lens Series (such as the HS308EX-ASP, HS607EX-ASP and HS1208EX-ASP) can be hard to find. We've posted a scanned copy here. Now updated with details of B/W Compensation Filter.