Zhumell 2" 2x ED Barlow Lens with 1.25" Adapter
- Extra low Dispersion glass for sharper views
- Double the magnification of any eyepiece, both 2” and 1.25”
- Brass compression ring Adapter is gentle on eyepieces
The Zhumell 2 ED Barlow lens doubles the magnification of any 2” or 1.25” eyepiece, giving you the most bang for your buck of any telescope accessory on the market! extra low dispersion glass for sharper, high contrast views. The Zhumell 2x ED Barlow lens was manufactured with extra low dispersion glass. Ed glass is more expensive, but since it helps light rays of different colors focus at the same point, the result is sharper, higher contrast results. Comes with an adapter for your 1.25” eyepieces. The Zhumell 2x Barlow comes with a 1.25” compression ring adapter. This means you can use your 2” eyepieces and your 1.25” eyepieces in the same Barlow, saving you money. A bit more about barrows. A Barlow lens is designed to multiply the magnification of any like-sized eyepiece. While a 2x Barlow is the most common, you can find barrows of other magnification ratios as well, including 2.5x, 3x and even 5x. Simply insert the Chrome barrel of the Barlow into your telescope focuser or diagonal, and then insert your eyepiece of choice into the top of the Barlow. How do I calculate magnification? to calculate the power of an eyepiece when inserted in your telescope, you need to divide the focal length of the eyepiece-the number is almost always etched on the eyepiece-into the focal length of your telescope. The focal length of your telescope is always a big number designated in millimeters. If you can't find it marked on your telescope, look at your instruction manual under Specifications for this information. Example: an 18mm eyepiece used in a telescope with a focal length of 1000mm has a magnification of 180x (1000 divided by 18 = 180). when you use your 18mm eyepiece in a 2x Barlow, you will achieve a magnification of 360x.
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