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GSO parabolic Newtonian primary mirror 6" aperture f/4
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GSO parabolic Newtonian primary mirror 6" aperture f/5
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GSO parabolic Newtonian primary mirror 6" aperture f/8
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GSO parabolic Newtonian primary mirror 8" diameter f/4
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GSO parabolic Newtonian primary mirror 8" diameter f/5
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GSO parabolic Newtonian primary mirror 8" diameter f/6
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GSO Zero Expansion parabolic Newtonian primary mirror 8" - f/6
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GSO parabolic Newtonian primary mirror 10" diameter - f/4
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GSO parabolic Newtonian primary mirror 10" diameter f/5
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GSO parabolic Newtonian primary mirror 12" diameter f/4
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GSO parabolic Newtonian primary mirror 12" diameter f/5
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GSO parabolic Newtonian primary mirror 12" diameter f/5 - 97%
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GSO parabolic Newtonian primary mirror 16" diameter f/4,5
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GSO Newtonian secondary - elliptical, minor axis 20mm
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GSO Newtonian secondary - elliptical, minor axis 28mm
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GSO Newtonian secondary - elliptical, minor axis 31mm
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GSO Newtonian secondary - elliptical, minor axis 46mm
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GSO Newtonian secondary - elliptical, minor axis 50mm
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GSO Newtonian secondary - elliptical, minor axis 63mm
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GSO Newtonian secondary - elliptical, minor axis 70mm - 94%
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GSO Newtonian secondary - elliptical, minor axis 74mm
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GSO Newtonian secondary - elliptical, minor axis 80mm
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GSO Newtonian secondary - elliptical, minor axis 88mm
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GSO 50mm secondary mirror with cell - for upgrading and ATM
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GSO 63mm secondary mirror with cell - for upgrading and ATM
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GSO Newtonian secondary - elliptical, minor axis 104mm
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GSO 70mm secondary mirror with cell - for upgrading and ATM
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