ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 60 Degree Diagonals The 15 mm Kellner eyepiece

The 15 mm Kellner eyepiece offers a nice medium magnification view in most telescopes

Aperture (mm): 280 mm (11 in)

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

9 kg (Mechanical mounting parts)

The emission line displays areas of super granulation cells that are brightest and strongest in areas of high magnetic fields

ZWO EFW Electronic Filter Wheel - Eight Positions for 1.25" or 31 mm Filters - EFW-8X125 60 Degree Diagonals The 15 mm Kellner eyepieceThis 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