Diptych triptych form, with two outer panels that could be closed across the main central representation. They are one type of the multi-panel forms of painting known as "polyptychs". The diptych was a common format in Early Netherlandish painting and depicted subjects ranging from secular portraiture to religious personages and stories. Often a portrait and a Madonna and Child had a leaf each. It was especially popular in the 15th and 16th centuries. Painters such as Jan van Eyck, Rogier van der Weyden, Hans Memling and Hugo van der Goes used the form. Some modern artists have used the term in
Castello Roganzuolo Altarpiece the Diocesan Museum. Much of the work is irretrievably damaged and its fourth cymatium panel showing the dead Christ with angels is still lost. A copy of all four panels now stands in the church, in the original elaborate frame. Castello Roganzuolo Altarpiece The Castello Roganzuolo Altarpiece, Castello Roganzuolo Polyptych or Madonna and Child with Saint Peter and Saint Paul is a painting by Titian, commissioned in 1543 by the leading citizens of Castello Roganzuolo, Province of Treviso, Veneto, Italy. It is now in the Albino Luciani Diocesan Museum in Vittorio Veneto. The painting is a triptych with three narrow