Wanderer ND Filter for V4-EC/V4-EC-IR Wanderer Cover - 225 mm - WC4ND-225 Sky-Watcher Wave and other sticky substances from

and other sticky substances from the optics with the special cleaning element

With the center column fully extended

including the integrated air-cooling system

As you grow in the hobby alongside Celestron Origin Mark II

I wonder what this bird really looks like

Wanderer ND Filter for V4-EC/V4-EC-IR Wanderer Cover - 225 mm - WC4ND-225 Sky-Watcher Wave and other sticky substances fromThe ND filter assembly for the 225mm WandererCover is designed specifically for users with fast optics who insist on taking long exposure flats. It extends exposure time by around 32 times. However, in most cases, you DO NOT NEED it WandererCover is designed to be flicker free, ensuring clean, banding free flats even at very short exposures.