This handy, time-saving OVL filter wheel is an essential accessory for any astronomer for both visual observation and telescopic photography. Up to five filters can be screwed into the numbered wells and then selected simply by rotating the inner wheel which snaps into the 5 positions. A recording can also be left blank to be able to observe without a filter. The filter wheel can be attached to the focuser via a 1.25″ barrel or a T2 thread. The robust filter wheel is equipped with a mount for 1.25″ eyepieces and a T2 connection with a lock ring for rotating cameras. Scope of delivery: Filter wheel 1.25″ adapter set! Power supply and batteries are not included!