A microscope objective lens produces a real, magnified image of an object placed within the field of view. Before it is observed the image is then magnified again by the ocular lens, also known as the ...

The numbers on binoculars indicate the magnification and size of the objective lens. For example, one of the most common magnification and objective sizes is the 10×42 (spoken as 10-by-42). The 10x in ...

Large objective lenses and 10x magnification on the Celestron UpClose G2 10x50 help these affordable binoculars appeal to anyone wanting to start stargazing.

There are also three objective lenses and two wide-field eyepieces. The main drawback is that the microscope doesn’t have a dual LED light to see opaque specimens illuminated from above.

For something slightly larger yet less expensive in the roof prism category try the Opticron Adventurer II WP 10x50, which has larger objective lenses, 10x magnification and high-quality optics.

Press Release The Future of Objective Lens Testing Date Announced: 04 Jan 2011 Measuring lens centering, air spacing, and center thickness inside of assembled optical systems with a single instrument.

Celestron SkyMaster 25x100 (Black) at Amazon for $474.95 The 100mm objective lens lets in lots of light, even into the early hours, while stargazing in a local dark sky area.