Module marlu::constants

Useful constants.

Constants

• COTTER_MWA_HEIGHT_METRES
  cotter’s MWA altitude in metres. Use MWA_HEIGHT_M unless you know what you’re doing.
• COTTER_MWA_LATITUDE_RADIANS
  cotter’s MWA latitude on Earth in radians. Use MWA_LAT_RAD unless you know what you’re doing.
• COTTER_MWA_LONGITUDE_RADIANS
  cotter’s MWA longitude on Earth in radians. Use MWA_LONG_RAD unless you know what you’re doing.
• DAYSEC
  Seconds per day (86400)
• DH2R
  Hour angle to radians (15 / 180 * PI).
• DS2R
  Seconds of time to radians (7.272205216643039903848712e-5).
• FREQ_WEIGHT_FACTOR
  The weight given to frequency when calculating a weight factor. When combined with TIME_WEIGHT_FACTOR, a visibility weight can be calculated.
• MWA_HEIGHT_M
  MWA height (a.k.a. altitude) [metres]
• MWA_LAT_DEG
  MWA latitude [degrees]
• MWA_LAT_RAD
  MWA latitude [radians]
• MWA_LONG_DEG
  MWA latitude [degrees]
• MWA_LONG_RAD
  MWA longitude [radians]
• SOLAR2SIDEREAL
  Ratio of a solar day to a sidereal day (24/23.9344696 = 1.002737909).
• TIME_WEIGHT_FACTOR
  The weight given to time when calculating a weight factor. When combined with FREQ_WEIGHT_FACTOR, a visibility weight can be calculated.
• VEL_C
  Speed of light [metres/second]