Aurora Observation Project

1. HySCAI Data

spec2d : spectrum intensity (kR/nm) measured with HySCAI

  • Three dimensional data of spectrum intensity, Iλ (w, x, y), with wavelength, azimuth (theta) and inclination angle (phi) at a time slice given by StartTime
  • Dimension w is the pixel number.
  • Dimension x is the pixel perpendicular to the slit of the spectrometer.
  • Dimension y is the pixel parallel to the slit of the spectrometer.
  • The spectrum at the specified position (theta, phi) is given in the unit of kR/nm or counts/pixel.
  • The data file is available every 1 or 2 minute.
  • This is an original source file for spectrum, spectrum_time, mimage, mimage_time files.
  • Iλ (w, x, y) dimmed is the intensity without peripheral dimming correction.
  • Iλ (w, x, y) is the intensity with peripheral dimming correction.
Earth, Planets and Space (2024)

Spec2d_keogram：time evolution of total emission (kR) at S-N direction for one night including next day (starting time is written as file ID)

  • Two dimensional data of intensity integrated along wavelength, I (y, t), in the unit of kR.
  • Dimension y is the zenith angle at S-N cross section.
  • Dimension t is the time in the unit of minute respect to the start time of observation of the night.
  • Time stamp of the file is the start time of the observation, which is usually at the evening.
  • Only one file for one night.
Earth, Planets and Space (2024)

spectrum : spectrum (kR/nm) averaged in space

  • One dimensional data of space averaged spectrum intensity, Iλ (w), a time slice given by StartTime in the unit of kR/nm or counts/pixel.
  • Dimension w is the wavelength in the unit of nm.
  • The file is available every 1 or 2 minute.
Earth, Planets and Space (2024)

spectrum_time：time evolution of spectrum averaged in space (kR/nm) for one night including next day (starting time is written as file ID)

  • Two dimensional data of space averaged spectrum intensity, Iλ (w, t), in the unit of kR/nm or counts/pixel.
  • Dimension w is the wavelength in the unit of nm.
  • Dimension t is the time in the unit of minute respect to the start time of observation of the night.
  • Time stamp of the file is the start time of the observation, which is usually at the evening.
  • Only one file for one night.
Earth, Planets and Space (2024)

mimage : monochromatic image (kR) integrated on wavelength range.

  • Two dimensional data of emission intensity, I (x, y), with azimuth (theta) and inclination angle (phi) data at a time slice given by StartTime in the unit of kR.
  • Dimension x is the pixel perpendicular to the slit of the spectrometer.
  • Dimension y is the pixel parallel to the slit of the spectrometer.
  • Twenty emission line intensity is given by integrating the spectrum numerically within the bandwidth specified.
  • The data file is available every 1 or 2 minute.
  • I (x, y) dimmed is the intensity without peripheral dimming correction.
  • I (x, y) is the intensity with peripheral dimming correction.
Earth, Planets and Space (2024)

mimage_time : time evolution of monochromatic image (kR) for one night including next day (starting time is written as file ID)

  • Three dimensional data of emission intensity, I (x, y, t), with azimuth (theta) and inclination angle (phi) data in the unit of kR.
  • Dimension x is the pixel perpendicular to the slit of the spectrometer.
  • Dimension y is the pixel parallel to the slit of the spectrometer.
  • Dimension t is the time in the unit of minute respect to the start time of observation of the night.
  • I (x, y) dimmed is the intensity without peripheral dimming correction.
  • I (x, y) is the intensity with peripheral dimming correction.
  • Time stamp of the file is the start time of the observation, which is usually at the evening.
  • Only one file for one night.
Earth, Planets and Space (2024)

monitor：Position calibrated HySCAI monitor image (RGB)

  • Three dimensional RGB data of monitor camera, I (fn, x, y), with azimuth (theta) and inclination angle (phi) data during the scan of HySCAI system.
  • Dimension fn is frame number.
  • Dimension x is the horizontal pixel of the CCD detector.
  • Dimension y is the vertical pixel of the CCD detector.
  • The data file is available every 1 or 2 minute.
Earth, Planets and Space (2024)

Access to Data files (search by Date)

Please select the range of the date and time (UTC) in the following page. The local time in Kiruna is UTC+1 or UTC+2 (summer time).

access

Rules of data use

  • Users should contact the PI of this project (Katsumi Ida, aurora.project@nifs.ac.jp) before using the repository data for their data analysis to consult on the appropriate use of instrument data and always use the latest version of the data file. Redistribution of the data file is strictly prohibited.
  • Users should provide the PI of this project a copy of the manuscript or presentation that uses this data repository enough before submitting that manuscript for consideration of publication or the presentation at a conference or workshop so that sufficient time is available to get necessary comment back to the data user. PI would suggest potential coauthor(s) from this project to be invited.
  • Publications that use this data repository must cite the following paper as reference and include the following statement in the Data Availability statement or Acknowledgements section.
  • Reference: M. Yoshinuma, K. Ida and Y. Ebihara, Earth, Planets and Space 76 (2024) 96, https://doi.org/10.1186/s40623-024-02039-y
  • Statement: Science data of the HySCAI / LCF camera / all-sky camera (chose appropriate instruments) were obtained from the Data Repository of Aurora Imaging Spectroscopy (DRAIS) operated by NIFS/NINS (DOI: 10.57451/nifs.aurora-project).