The
APT80 Telescope Catania Astrophysical Observatory
The "M. G.
Fracastoro" Mountain Station
Serra La Nave (Mt. Etna)
Optical configuration
| Optical configuration | Cassegrain | |
| Main mirror | diameter | 80 cm |
| curvature | paraboloid | |
| focal length | 1.6 m | |
| focal ratio | f/2 | |
| Secondary mirror | diameter | 14 cm |
| Cassegrain focus | equivalent focal length | 6.4 m |
| equivalent focal ratio | f/8 |