astrophotometer
As`tro*pho*tom"e*ter, n. [Pref. astro- + photometer.] (Astron.) Defn: A photometer for measuring the brightness of stars.
As`tro*pho*tom"e*ter, n. [Pref. astro- + photometer.] (Astron.) Defn: A photometer for measuring the brightness of stars.