shortbaseline
Short baseline refers to a relatively short separation between individual apertures or antennas in an interferometric array. In interferometry, the angular resolution achievable by a pair of elements is approximately the observing wavelength divided by the baseline length. Therefore, short baselines yield lower angular resolution but are crucial for sampling larger angular scales on the sky. The exact meaning of "short" is context-dependent, varying with the observing wavelength and the array design.
Short baselines play a key role in capturing extended emission that would be resolved out by longer
In practice, arrays are often configured with a mix of short and long baselines to balance sensitivity
The concept of short baseline is widely used across interferometry disciplines, including radio and optical/infrared astronomy.