The celestron nexstar evolution 6 is a compact portable 6 schmidt cassegrain telescope with integrated wi fi for observing the moon planets and other night sky objects using the free celestron skyportal app for ios android users are able to explore the universe and control the evolution 6 with a smartphone or tablet the telescope comes with a computerised goto mount with high performance worm gears and motors for improved tracking accuracy along with reduced gear backlash its powered by