Celestron EdgeHD 8" Optical Tube Assembly (OTA) (91030-XLT) Ultima Part Alt-Az mount

Part Alt-Az mount

The higher power eyepiece will increase the magnification from the 53x that you gt out of the box to 130x magnification that's ideal for planetary viewing

and ergonomic aspect was rethought to achieve reference-standard performance for any visual application

In this case

Additional Aux accessory ports and autoguider port on the Dec axis for better cable management

Celestron EdgeHD 8" Optical Tube Assembly (OTA) (91030-XLT) Ultima Part Alt-Az mountEdgeHD is an aplanatic, flat field Schmidt Cassegrain telescope that produces aberration free images across a wide visual and photographic field of view. The optical system was designed to reduce more than just off axis star coma; it also provides an astrograph quality flat focal plane all the way to the edge of the field of view. True Astrograph Quality Many optical designs that advertise themselves as "astrographs" actually only produce pinpoint