Astronomical Observatory del Montsec
Coordinates: 42 ° 3 ′ 6 " N , 0 ° 43 ′ 47" E
The Observatori Astronòmic del Montsec (OAdM) and the Parc Astronòmic Montsec (PAM) are Catalan observatories in the Serra del Montsec , the latter to bring astronomy closer to a wide audience. The largest telescope "Joan Oró" is a Ritchey-Chrétien telescope with an 80 cm aperture . In 2010, a Baker-Nunn camera modified for CCD sensors was commissioned .