The Zeiss Double Astrograph

Characteristic of two instruments and of the equatorial mount.

1 - Reflector Newton - Cassegrain system: Parabolic mirror aperture 60 cm, Focal l.240 - 1820cm;

2 - Refractor System: Four lens objective Petzval: aperture 40 cm chromatic correction 390 to 460 nm Focal l. 200 cm - Photographic plate 30x30 cm -

Vatican Observatory 2025.09.27