The celestron nexstar evolution 8 is a user friendly 8 schmidt cassegrain telescope with built in wi fi for observing the moon planets galaxies and other night sky objects the evolution 8 features starbright xlt optical coating to increase light transmission fastar compatibility a computerised goto mount and is powered by a rechargeable lithium ion battery with enough power for 10 hours of continuous observing using the free celestron skyportal app for ios android users are able to explo