Celestron

Used 3x - 1.25" Celestron Long-Format Barlow Lens

SKU: U2303-EB-3XBLW


  • Sale
  • $24.95
  • $59.95

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Not Returnable Please note that used items are not returnable.
This is a used Celestron 3x Barlow in good condition.  There is some minor dust on the optics, and the barrel is unmarked.  This is an old-style long-format Barlow, and is at least 25 years old, if not 30 or 35.  Comes in its original box, with both dust caps.  
 
 
 

A Barlow lens is the astronomy accessory that keeps on giving! Insert it between your eyepiece and your telescope to get double the magnification instantly. Let’s say you have two eyepieces in your accessory case, a 10 mm and a 25 mm. Add a Celestron 3X Barlow Lens to the mix, and now you have four magnifications to choose from. 

Eye relief is the distance your eye has to be from the first lens in the eyepiece in order to see the full field of view. When you use a Barlow lens with an eyepiece, you get double the magnification, but the eye relief is not affected. This is a good thing, because normally the shorter the focal length of the eyepiece, the less eye relief you have. In other words, a standard 10mm eyepiece, as a general rule, will have better eye relief than a 3.5mm eyepiece. Bonus! 

 

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