List of astronomical interferometers at visible and infrared wavelengths Current performance of ground-based interferometers Current Performance of Existing Astronomical Interferometers

| Interferometer_and_observing_mode | Waveband | Limiting_magnitude | Minimum_baseline_m_un_projected | Maximum_baseline_m | Approx_no_visibility_measurements_per_year_measurements_per_night_x_nights_used_per_year | Max_ratio_of_no_phase_no_amplitude_measurements_measure_of_imaging_performance_0_is_none | Accuracy_of_amplitude2_measurements | Accuracy_of_phase_measurements_milli_radians | Number_of_spectral_channels_max_in_use_simultaneously | Comments_ |
|---|---|---|---|---|---|---|---|---|---|---|
| CHARA Array | V, R, I, J, H, K | 8 | 34 | 330 | 7500 | 0.7 | 1% | 10 | 30000 | Yes... 30000 in the visible band; maxiumum baseline 330-m |
| COAST visible | R, I | 7 | 4 | 60 | 2000 | 0.5 | 4% | 10 | 4? | 300 cloudy nights per year, maximum baseline 100-m |
| COAST infrared | J, H | 3 | 4 | 60 | 100 | 0.5 | 20% | 10 | 1 | 300 cloudy nights per year, maximum baseline 100-m |
| GI2T visible | R, I | 5 | 10 | 65 | 2000 | 0 | 10% | - | 400? | CLOSED in 2006 |
| IOTA | J, H, K | 7 | 6 | 30 | 10000 | 0.3 | 2% | 10 | 1? | Integrated optics beam combiner. CLOSED. |