observe function

dynamic observe(
  1. String tle,
  2. Qth qth,
  3. dynamic start
)

Implementation

observe(String tle, Qth qth, start) {
  var tles = tle.split('\n');
  Map<String, dynamic> satrec = twoline2satrec(tles[1], tles[2]);

  if (_badSat(satrec, qth, start)) {
    return null;
  }

  return _observe(satrec, qth, start);
}