102mm objective lens diameter and f/7 focal ratio telescope OTA; large objective lens brings more lights into the scope body and you will get more bright and clear image
Crisp Image; ultra wide band multi-layer coating technology;102mm aperture optics and retactable lens hood deliver bright wide-field images with sharp resolution
0.8x focal reducer and field flattener; for refractor telescopes; meet the illumination needs of full-frame shooting
About the compatibility; has standard 2" filter thread; to add light pollution filter; a standard 2-inch socket in front end; to connect to the main lens; M48x0.75 threaded in back end; can be connected with the camera bayonet
It will be durable; multi-coated optics; high polish; hard anodize finished aluminum body; to help reduce weight