Used Celestron Oxygen III Narrowband Filter - 2" AVX the eyecups position the user’s

the eyecups position the user’s eye behind the eyepieces at the correct distance for optimal viewing

ASI294MC Pro has the same mechanics as ASI1600 Pro

Built-in Wi-Fi enabling unparallel connectivity

one (1) on mount for mobile device charging only Ethernet: One (1) on optical tube Auxiliary Ports: Two (2) on optical tube

Used Celestron Oxygen III Narrowband Filter - 2" AVX the eyecups position the user’sThis is a 2" Celestron O III filter in excellent, clean condition. Comes in its original jewel box. The 2" OIII narrowband filter isolates the two doubly ionized oxygen lines (496 and 501 nm lines) Filter has ultra hard, vacuum deposited coating Eliminates un natural colored halos surrounding bright stars The 2" OIII narrowband filter isolates just the two doubly ionized oxygen lines (496 and 501 nm lines) emitted by planetary and emission nebulae,