Check out a few zoom eyepieces I use regularly for solar observation
1- ZEISS Vario D 15-56x/20-75x eyepiece (maybe the best zoom eyepiece out there, and the most expensive as well)
2- Vixen LV eyepiece Zoom 8-24 mm 1,25"
3- Pentax SMC XF 6.5-19.5mm 1.25" eyepiece
4- Baader Hyperion Universal Mark II 2", 8-24mm Zoom eyepiece
5- Lunt Solar Systems 1.25" 7.2mm - 21.5mm zoom eyepiece














