5x Focal Extender 1.25-Inch - FE05-125

$ 159.99

5x Focal Extender 1.25-Inch

This is Explore Scientific's most powerful Focal Extender, multiplying any 1.25-inch eyepiece to give it five times more power. You'll get the best use of this device when you want to use long focal length eyepieces and keep the eye relief that the long focal length eyepiece typically has.

For example, let's say that you must wear glasses because you have astigmatism and your telescope is an Explore Scientific ED127 and you have a 24mm 68° Series Argon-Purged Waterproof Eyepiece. This eyepiece has over 18mm of eye relief, more than enough so that you can keep your glasses on and still see the entire 68° apparent field. But this combination only produces 39.68X magnification. If the seeing conditions are good and you want to push the magnification for planetary observations, the 5x Focal Extender would be an obvious choice... pushing the magnifying power to to 198.4X!

Of course there are many other eyepieces in the Explore Scientific line and eyepieces by other manufacturers that would work well with the 5x Focal Extender to produce high to very high magnifications with any style or brand of telescope that uses 1.25-inch accessories.

A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magnification of any eyepiece with the same barrel size that you already own. In other words, 3 eyepieces offer 6 magnification choices with the addition of a focal extender. Secondly, most of the time, lower magnification eyepieces have better eye relief than higher power models. When using a focal extender to increase your magnification, you get to enjoy the generous eye relief of the lower power eyepiece, and that's quite a bonus, especially for eyeglass wearers or for those with fast telescopes who can really push high magnification eyepieces. Remember, we make focal extenders in 2x (for 2.0-inch and 1.25-inch eyepieces), and a 3x model for 1.25-inch eyepieces.


  Item Number FE05-125
  Barrel Size 1.25-inch
  Length 96mm
  Width 45mm
  Weight 260 grams; 9.2 oz


Limited Warranty is one year, which converts to the Explore STAR Transferrable Extended Life of the Product Warranty when product is registered within 60 days of purchase. For more information Click Here.

Support information for this product coming soon!

More information for this product coming soon!