References in periodicals archive ?
An expert photometrist, Henden brought a new level of sophistication to the AAVSO's observing programs, encouraging rapid growth in the number and quality of observations added annually to the AAVSO's database.
John Fletcher, a renowned photometrist and observer of Near-Earth Objects, operates the Mount Tuffley Observatory in Gloucestershire.
He purchased a 16-inch Pyrex blank and, with the help of the well-known Georgia photometrist Howard Landis, he ground and polished a Cassegrain primary mirror.