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Searching Data

Open the site and land on Search.

Sky position

  • Choose a system: Equatorial (deg), Equatorial (hms/dms), or Galactic (l/b)
  • Enter RA/Dec (or l/b) and Radius (default 5°)
  • Optionally type an object name → click Simbad/NED → pick from dropdown to auto‑fill

Observation time

  • Time system: toggle TT (default) or UTC
  • Per row (Start/End) you can edit any of:
  • Date YYYY‑MM‑DD
  • Time HH:MM:SS
  • MJD (Modified Julian Date)
  • MET (s) — Mission Elapsed Time since the fixed CTAO epoch
  • Fields stay in sync; fill whichever is convenient
  • MET epoch (fixed): 2001‑01‑01 00:00:00 TT

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