Preparing for multi-modal measurements of meteors, part 1

AllSky7 and EISCAT_3D


Daniel Kastinen - Johan Kero - Maria Gritsevich

AllSky7 and EISCAT_3D

The main goals:

  • Create an unprecedented high quality meteor head echo dataset
    $\mapsto$ EISCAT 3D
    • Hackaton with EISCAT in Nov - I will try to run a meteor experiment
  • Utilize this high data quality to the fullest
    $\mapsto$ multi-modal measurements

The main goals:

  • Create an unprecedented high quality meteor head echo dataset
    $\mapsto$ EISCAT 3D
  • Utilize this high data quality to the fullest
    $\mapsto$ multi-modal measurements
    • Optical (2 old mostly non-functioning meteor cameras)
    • Infrasound (Swedish-Finnish Network)
    • Spectroscopic (no dedicated/ALIS_4D)
    • Meteor trails (Nordic meteor radar cluster)
    • of course also ionosondes, LIDARs, magtometers, ...

The main goals:

  • Create an unprecedented high quality meteor head echo dataset
    $\mapsto$ EISCAT 3D
  • Utilize this high data quality to the fullest
    $\mapsto$ multi-modal measurements

First step: meteor camera network around EISCAT_3D

  • Optical-radar detections
  • Meteorite recovery
  • Other sky phenomena
    (pulsating aurora, PSC's, noctilucent clouds, satellite tracks ...)

The plan

So how is it going?

So how is it going?

  • Cameras working, not yet properly processing data
  • Need to write some custom station keeping software
    (research infrastructure reasons)
  • Need to correlate stations and other instruments - absolute timing calibration

Credit: AllSky7 @ Umeå University 2024-09-12

  • Need to correlate stations and other instruments - absolute timing calibration

Stuff we tried:

  • Setting the time on the IP camera
    - they drift a lot and time was not accurate enough
  • Enabling PTS timestamps in the stream
    - firmware did not seem to do it
  • Use disk write time
    - unknown lag (~100's ms) introduced, stable or not?
  • Setup external calibration source....
    What is this?

Time calibration

Same idea as stellar occultation observers use: GPS synchronized LED's

Time calibration

Time calibration

Time calibration

Time calibration

Time calibration

Time calibration

Time calibration

Time calibration

Thank you for your attention

Credit: AllSky7 @ IRF Kiruna