Montarrenti Observatory (IAU code C88, Lat. 43°13’57” N – Long. 11°11’02” E – Alt. 347m) is a public observatory located close to the homonym medieval castle near Siena (Italy), managed by the local amateur astronomer association (Unione Astrofili Senesi ODV). The main instrument is an automated and remoted Ritchey-Chretien telescope D=0.53m – f/8.7 equipped with … Leggi tutto OAPM technology / Strumentazione OAPM