The lens, or combination of lenses, at the eye end of a microscope, telescope or other optical instrument, through which the image formed by the mirror or object glass is viewed.
also known as ocular, it produces the second stage of magnification enlarging the image magnified by the objective lens. Eyepieces vary in magnification from 5x to 30x. The standard is 10x.
A (typically) 1.25" or 2" tube containing one or more lenses that is inserted in the focuser of the telescope and used to magnify the image formed by the objective lens.
A combination of lenses used to view the image formed at the focal point (or objective) of a telescope.
the lens at the viewing end of a telescope. The eyepiece enlarges an image captured by the telescope.
Compact lens system inserted in the focuser of the telescope, used to magnify the image to the desired level. Also see Kellner, Orthoscopic, Huygenian, Ramsden, RKE, Plossl, Nagler, Erfle.
The part of a visual telescope that is used to provide different magnifications of the image the viewer is seeing. Usually measured in millimeters. The lower the number of millimeters the higher the magnification.
The lens that is closest to the eye when someone looks through a spotting scope. In some cases the eyepiece is a fixed component of the scope and in other designs the eyepiece is a separate item that can be changed to meet specific magnification needs. The eyepiece plays a large role in determining the overall magnification of the spotting scope.
combination of lenses at the viewing end of optical instruments
a magnifier, much like a high power magnifying glass
A lens designed to make light rays parallel so they can be viewed by the eye.
The lens closest to your eye when looking through a microscope. A binocular or stereo microscope will have two, a monocular microscope will have one. It also plays a critical role in the total system magnification. See also widefield eyepiece.
the part of a telescope that you look into.
The changeable section of the telescope that you look into to view the skys. Various types exist, the Plossl is currently very popular.
A combination of small lenses mounted in a tube, used to magnify and focus the image formed by a telescope or other optical instrument.
The lens at the viewing end of a telescope. The eyepiece is responsible for enlarging the image captured by the instrument. Eyepieces are available in different types and powers, yielding differing amounts of magnification and field of view.
A small, high-quality lens that magnifies the image formed by a telescope's optics.
A short focal length lens used to enlarge the image in a telescope; the lens nearest the eye False Color A graphical representation of data in which an images is colored to reveal additional detail