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The COSETI Observatory

  • Antenna EIRPs

    • Assume mean transmitter power = 1 GW
      • Pulse duration = 1 nanosecond
      • Repetition rate = 1 pulse per second
      • Peak Power = 1018 W
    • Microwave SETI
      • 300 meter Arecibo dish at 1.5 GHz, Gain = 74 dB
      • Peak EIRP = 3.2 x 1025 W
    • Optical SETI
      • 10 meter Keck-type telescope at visible wavelengths, Gain = 154 dB
      • Peak EIRP = 3.2 x 1033 W (Sunís EIRP = 3.9 x 1026 W)
      • Laser lighthouse flash briefly outshines star by 70 dB (10 million times)!

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