The Heaven Machinery in Florentine Theatrical Tradition
La macchina del cielo nella tradizione teatrale fiorentina
check Domenico Mellini, has also made description of machinery
“The stage for the representation was constructed under the Cupola […] and Paradise appeared open and full of stupendous splendour, and in it God the Father amidst a multitude of Angels and Cherubim, and told the Angel Gabriel to descend to earth and announce to the Virgin Mary the Incarnation of his Son. Then the Angel Gabriel in a beautiful mandorla all full of lights descended slowly to earth, and above him then was a Choir of Angels that descended with him half way then stopped, and the mandorla where the Angel Gabriel was then went down slowly by itself to earth, and when it arrived there he stepped out of the mandorla and immediately all the lights and splendour of the mandorla were displayed, and moving slowly with most beautiful grace he went before the Virgin, and with a voice that was almost divine, he told her of God’s message”