what happened at esa’s meteor research...esa mrg - met-rssd-ho-071/1-, 12 sep 2011 1 what happened...
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ESA MRG - MET-RSSD-HO-071/1-, 12 Sep 2011 1
What happened at ESA’s Meteor Research
Group in 2010/11?D. Koschny
Keplerlaan 1, Postbus 2992200 AG Noordwijk, The Netherlands
CILBOSpectra
FluxMeteoroid model
VMOTheoretical work
Geminids 2010The future
Presented at the IMC 2011, Sibiu, Romania
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• CILBO = Double-station setup
on the Canary islands
• Status:
First roll-off roof on Tenerife
But: Intensifiers kept breaking
Are being fixed by manufacturer
Weather report coming in every
morning from Tenerife via email
Setup on La Palma still to be done
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• CILBO photo
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CILBO – Software work
Support to Sirko for MetRec on Windows
Generation of an automation software to
Check weather data
Check sun elevation and lunar distance to the field of view
Open/close a motorizedroof
Switch on/off cameraand intensifiers
Send data to ftp serverevery morning
Send email with summaryinfo and link to data everymorning
Remote login via logmein.com
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The camera
Holder for grating
Video
cameraIntensifierlens
Adapter for different
lenses
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Spectra
• Two summer students helping us to understand analysis
of spectra
• We use a software called PARADE to simulate spectra
Input chemical element(s), temperature
Output: simulated spectrum
Compare to existing spectra
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• A measured spectrum (spectrally calibrated),
with simulated Ca-spectrum in blue
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Current assessment
• PARADE was written for modelling the entry of
spacecraft under ESA contract
• It’s database does not yet contain relevant elements for
meteor spectrum analysis
• It only runs on Unix
• Not user-friendly at all, needs a steep learning curve
• We’ll continue working with it – but need more work to
actually be able to use it properly
• Current spectral fits show two temperature regimes for
the one analyzed meteor (~6000 K and ~10000 K)
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Flux – see IMC 2010, Paco’s work
• Paco Ocana’s code
presented at the IMC 2010
was validated
• Code reproduces both the
Brown 1999 and the Bello-
Rubio 2002 data
• Validation of MetRec flux
determination to come
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Meteoroid modelling
• Update of the ESA Interplanetary Meteoroid Engineering Model
(IMEM) last year – more user-friendly!
• As announced last year (Drolshagen): Preparing for a new contract -
Interplanetary Micrometeoroid Environment for (human) eXploration
(IMEX)
• Incorporating optical data is planned
• Invitation to Tender before end 2011
• Another project coming up: Mitigation measures and impact effects
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Some IMEM visualisations
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Virtual Meteor Observatory
• Maintenance of the server
• Outcome of MOD WS #04:
Start a “VMO developer” group to
push further in making the VMO a
functioning meteor data archive.
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Theoretical work
• With M. Gritsevich (Moskau) + T. Kohout (Finland)
• Fitting dynamical model to deceleration data
• Trying to link with photometrical models to better constrain
small objects
• See Icarus 212/2 (2011),
877-884
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Geminids 2010
• Observing campaign parallel to a rocket launch
campaign in Andoya, Norway
• Combining cameras with radar for flux measurement
• Optical meteor observations + radar head echo
observations
• Observations compromised
by aurorae
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Image: A. Knofel
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• Double-station meteor
with head-echo and
spectrum
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The future
• Finish CILBO
• Get back to the VMO
• Participation in Draconid
airplane campaigns
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