The loop gain is usually assigned a value between 0.1 and 0.5. The CLEAN Algorithm performs better for extended
structures if is set to the lower part of this range. However, the time required for the CLEAN Algorithm increases
rapidly for small . From Thompson et al. (1986), the number of cycles needed for one point source is
See also CLEAN Algorithm
References
Thompson, A. R.; Moran, J. M.; and Swenson, G. W. Jr. Interferometry and Synthesis in Radio Astronomy.
New York: Wiley, p. 348, 1986.