Multichannel Astrometric Photometer (MAP)A device developed and used at Allegheny Observatory in the search for extrasolar planets. An instrument attached to a solar telescope for the purpose of producing magnetograms. The first solar magnetograph was developed by Horace Babcock in 1953. Related category OBSERVATORIES AND TELESCOPESAlso on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History |