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
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- Microwave SETI
- 300 meter Arecibo dish at 1.5 GHz, Gain = 74 dB
- Peak EIRP = 3.2 x 1025 W
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- Optical SETI
- 10 meter Keck-type telescope at visible wavelengths, Gain = 154 dB
- Peak EIRP = 3.2 x 1033 W (Sun’s EIRP = 3.9 x 1026 W)
- Laser lighthouse flash briefly outshines star by 70 dB (10 million times)!
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