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_ |
|---|---|---|---|---|---|---|---|---|---|---|
| Palomar Testbed Interferometer | J,H,K | 7 | 86 | 110 | 50000 | 0 | 2% | 0.1 | 510 | dual-star capable , No imaging on a single baseline instrument. CLOSED 2009. |
| SUSI | B, V, R, I | 5 | 5 | 640 | 5000 | 0 | 4% | 10 | 21 | No imaging on a single baseline instrument; Maximum baseline 160m |
| VLTI , +UTs AMBER | J, H, K simultaneously | 7 | 46 | 130 | 400 | 0.3 | 1% | 10 | 2000 | Used for a few weeks per year. Longest overall VLTI Baseline 130m |
| VLTI , +ATs AMBER | J, H, K simultaneously | 4 | 46 | 130 | 400 | 0.3 | 1% | 10 | 2000 | Longest overall VLTI Baseline 130m |
| VLTI , +UTs VINCI | K | 11 | 46 | 130 | 400 | 0 | >1% | - | 1 | Integrated optics beam combiner. Longest overall VLTI Baseline 130m |