Used Celestron Oxygen III Narrowband Filter - 2" Hydrogen Alpha Orion SkyWatcher 10"

Orion SkyWatcher 10"

emergency kit

Comets - Enhances the definition of comet dust tails in 10" and larger scopes

The TrailSeeker offers numerous features normally found only in much higher priced spotting scope models

Designed specifically for the Vespera lens

Used Celestron Oxygen III Narrowband Filter - 2" Hydrogen Alpha Orion SkyWatcher 10"This 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,