Sky Mentor 7-21 mm Zoom 1.25" Eyepiece - 721-ZOOM Dew Controller Each Fluorite lens is expertly

Each Fluorite lens is expertly shaped into a spherical surface and rigorous inspection follows to ensure quality before the next step

With its built-in two stage TEC cooling

Enter the Celestron LensPen

EclipSmart multi-coated optics offer high contrast images to clearly show the details of the Sun

Sky Mentor 7-21 mm Zoom 1.25" Eyepiece - 721-ZOOM Dew Controller Each Fluorite lens is expertly7 21mm zoom eyepiece; allows you to change magnification power without swapping out eyepieces; suitable for viewing the lunar surface; planets; nebulae; star clusters; 5 elements 3 groups lens structure; 5 elements 3 groups made of high index glass deliver sharp; high contrast vistas; get bright and true image colors; 52 36 field of view; SV135 zoom eyepiece allows you to see different wide field of view under the same viewing conditions; 13mm 14mm