Some applications require rapid change of filters in order to acquire different spectral ranges as close together in time as possible. Our high speed filter changers represent a major leap forward in speed and ease of use. Optimized hardware cuts filter wheel move times in half even with a fully loaded wheel. Software does not need to be manually “tuned” to the number of filters or their locations. The compact units connect directly to the host computer via RS-232 (no bulky external controller needed) and up to three can be daisy-chained from a single computer port.