ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 #solar Note: The Pier Tripod and

Note: The Pier Tripod and three Leveling/Vibration Pads are also included with this model

Alignment is easy using the small opening on one end and thin cross hairs at the other end

Here is how they described the Hestia:

This model comes with a 2" Rack & Pinon focuser but does not include a Blocking Filter

ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 #solar Note: The Pier Tripod andThis model of the ZWO EFW Electronic Filter Wheel has a carousel with eight (8) filter positions and accepts either 1. 25" threaded filters or 31 mm unthreaded filters. The 1. 25" filters thread into place, while the 31 mm filters require M2 screws and washers (included) to fix them in place. Filters are sold separately, just make sure your 1. 25" filters have threads that are shorter than 3 mm in length, and all filters are less than 7 mm high. By