Daystar ERF 150mm with 210mm Cap - E-210N150 Dew Shields By Size_5” which also serves as the

which also serves as the illuminator's on/off switch

then the Explore Scientific Carbon Fiber ED127 Triplet APO is definitely worth considering

With an apparent field of view that is close to the maximum for hyper-wide eyepiece design

Helical Front-end Focus with fine precision

3 kg) when fully loaded

Daystar ERF 150mm with 210mm Cap - E-210N150 Dew Shields By Size_5” which also serves as the150mm ERF Glass, Cell & 210mm ID Cap For Refractors DayStar Energy Rejection Filters reduce the heat load on your filter assembly by absorbing or reflecting UV and or I light and transmitting light in the desired visual spectrum. These filters are sometimes Red or Yellow glass, or dielectric IR and UV, but pass light in the desired visual spectrum. The ERF can also serve as an aperture mask to accomplish a straight angle of incidence for light