ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 60 Degree Diagonals Two optical tubes is also

Two optical tubes is also great for solar applications when using two different filters for safe observation of the sun

Baader''s DSLR conversion filters replace the factory correcting filter ("hot mirror")

Tele Vue is known for its in-house telescope eyepiece and TeleVue Telescope designs by Al Nagler

0 port on hand control for direct links to a PC via ASCOM supported software

making it easy to just slide the foot into the shoe and tighten it down

ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 60 Degree Diagonals Two optical tubes is alsoThis 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