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Doubles the power of any eyepiece. Insert the Barlow into the telescope's eyepiece holder first, followed by an eyepiece.

For refractor, reflector and Schmidt-Cassegrain.The most advanced Barlow lens yet developed for commercial telescopes, the Meade 2x Apochromatic Barlow includes a 3-element, air-spaced telenegative lens unmatched in image resolution, contrast, and colour correction.Used with any telescope - refractor, reflector, or Schmidt-Cassegrain - equipped with a focuser accepting standard 1.25" barrel-diameter eyepieces, this Barlow doubles

Threads into the front lens cell and effectively inhibits the formation of dew on the lens surface of your ETX-90EC telesope.

Threads into the front lens cell and effectively inhibits the formation of dew on the lens surface of your ETX-105EC telesope.

Threads into the front lens cell and effectively inhibits the formation of dew on the lens surface of your ETX-125EC telesope.

Diagonal mirrors and prisms result in images that are correctly oriented up-and-down but reversed left-for-right. For terrestrial observing a fully correctly oriented telescopic image is desirable; the Diagonal Prism accomplishes this image correction and places the eyepiece at a convenient 45° viewing angle. Use with the 1.25" Eyepiece-Holder.

A 45° diagonal prism for Schmidt Cassegrains and Refractors. The image will appear upright but will be mirror reversed.

These tiny binoculars from Nikon offer exceptional image quality and clarity. They are also lightweight that makes them perfect for travelling.Specification:Angular field of view (Apparent/degree):49.0Field of view @ 1,000m: 122°Exit pupil: 2.1mmRelative brightness: 4.4Eye relief: 10.0mmClose focusing distance: 2.0mWeight: 135gLength: 47mmWidth: 108mm

OverviewStylish metal body Ultra compact and lightweight, only 130g (6x15M CF) / 135g (7x15M CF) Short close-focus distance : 2m Multilayer coated lenses for bright images Specification Magnification:6xObjective diameter:15mmAngle of view:8 degreesApparent angle of view:48 degrees (wide)Exit pupil:2.5mmEye relief:10.1mmBrightness index:6.3Field at 1000m:140mMinimum focus distance

OverviewAll lenses and prisms are multilayer coated for bright, clear images Broad field of view (70 degrees) Lightweight thanks to die-cast magnesium (Mg) alloy body Traditional simple, compact design for easy use.Specification Magnification:8xObjective diameter:30mmAngle of view:8.8 degreesApparent angle of view:70 degrees (wide)Exit pupil:3.8mmEye relief:13.8mmBrightness index:14.4