isophotal

isophotal

(ˈaɪsəʊˌfəʊtəl)
adj
(Astronomy) astronomy relating to an isophote or isophotes, or to a diagram on which isophotes are represented
References in periodicals archive ?
Tokunaga and Vacca (2005) present isophotal wavelengths, flux densities, and magnitudes for the standard A0 star Vega (alpha Lyrae).
Our goal was to classify objects at least one isophotal magnitude fainter than objects classified in previous comparable surveys.