52° Series 30mm Waterproof Eyepiece Focal Ratio_4. f/10 - f/15 With an apparent field of

With an apparent field of view of 62 degrees and near parfocal design

Everybody loves a treasure hunt

Width 48mm

Explore the wonders of the night sky with the National Geographic 70mm AZ Refractor Telescope

diving into a STEM project

52° Series 30mm Waterproof Eyepiece Focal Ratio_4. f/10 - f/15 With an apparent field ofLoved by deep sky observers, a 30mm focal length eyepiece produces a large exit pupil which floods your dilated eye with light, which is needed to see faint galaxies and nebulae. Low power eyepieces are very important to observers for a variety of reasons: Their wide true field of view make object location and pointing far easier.; Many deep sky objects are large and are best viewed at the lowest magnifications your telescope eyepiece combination can