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77mm Eyepiece Magnification (1 Viewer)


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I have the MM3 50mm HD and the MM4 60mm Opticron scopes and am considering adding the MM4 77mm.

I’d like to understand the magnification of the various eyepieces available to me. Some are clear and easily found, such as the SDL2 (40936) and SDL3 (41270) where I understand the magnification would be 18-54x. Others such as the 40810, 40831 and the 40858 do not appear to be well documented!

MM4 50mmMM4 60mmMM4 77mm
40936 SDL212-36x15-45x18-54x
41270 SDL312-36x15x45x18-54x
40810 HDF T WW13x17x20x
40831 HDF T WW18x23x28x
40858 HDF24x32x?

Thank you.
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