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Description ES 2" Dielectric-Coated Diagonal Mirror with 1
Along with the stability aspect
7") length
we must first understand the Barlow lens
Tele Vue Nagler Planetary Zoom 2023 eclipse Description ES 2" Dielectric-Coated DiagonalDescription Zoomable 50 Constant Apparent Field Eyepieces This is the "ultimate" tool for tweaking out the last bit of power that the atmosphere will permit. This model zooms from 6mm down to 3mm, and has click stops every mm. Al Nagler says of the Planetary Zoom, "I did not set out to design a zoom eyepiece, per se. David and I were discussing characteristics we'd like in a superior 'planetary' eyepiece, and the zoom feature answered one of the major
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