The detail from this telescope is incredible. The CPC 800 GPS XLT is part of Celestrons leading product range. This telescope includes an integral GPS receiver which downloads datestamps from local satellites and automatically finds its position on the earth. Alignment is the familiar three point star selection as with most of Celestrons automatic telescopes. The software that comes bundled with the CPC800 includes over forty thousand objects. The superb optical resolution allows for viewing of the finest details such as the surface of Mars or the planets such as Neptune and Pluto. The inform feature provides information on the objects you are looking at, a great way to continue learning about the night sky. An all round great telescope for the astronomy enthusiast.