JD 2441901, previously a red dwarf (at left) has been boosted by polar reflectors to K-class temperatures (at right)
A solar output enhancement array. It consists of solar sails placed in balanced positions above the northern and southern hemispheres of a star. The array reflects the output of the star back onto its surface, thereby heating the outer layers and causing the star's spectrum to shift upward. The result for planets and habitats orbiting in the plane of the ecliptic is that the star appears to change from its original classification (typically M-type or L-type) to a more Sol-like spectrum (FGK-type).