The COSETI Observatory
Continuous Wave, Monochromatic Laser Beacon Signals.
- Incoherent Direct Detection Systems.
- Use a monochromator or bandpass optical filter to reduce effect of background noise.
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- Coherent Optical Heterodyne Detection Systems.
- Also reduces effect of background noise.
- Only recommended for Professional OSETI systems because of difficulty in its implementation, tunability and its expense.
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