Explore Scientific 2x Focal Extender (2")

Explore Scientific 2x Focal Extender (2")

Explore Scientific 2x Focal Extender (2")

B&H # EXFE02020 MFR # FE02-020
Explore Scientific 2x Focal Extender (2")

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Product Highlights

  • Increases Eyepiece Magnification 2x
  • 2" Diameter Barrel
  • 4-Element Optical Configuration
  • Textured Slip-Resistant Grip
  • 1.25" Eyepiece Adapter
  • Fully Multicoated Optics
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Explore Scientific FE02-020 overview

  • 1Description

The 2" barrel diameter 2x Focal Extender from Explore Scientific doubles the magnification of any 2" and 1.25" eyepiece, adding another layer of usability to the eyepieces you have. Additionally, since low-power eyepieces often offer a longer eye relief than high-magnification ones, using this focal extender gives you the benefit of comfortable viewing, while increasing the magnification. This extender features a fully multicoated 4-element optical configuration to produce bright images with true color representation without distortion across the entire field of view. An adapter is included that enables the use of 1.25" eyepieces with this focal extender.

Effectively increases the magnification of any 2" eyepiece 2x
Four-element optical configuration with fully multicoated anti-reflective coatings
Double tapered barrel design allows for smooth insertion and removal into telescope focuser or eyepiece holder
Textured non-slip grip
UPC: 812257010400
In the Box
Explore Scientific 2x Focal Extender (2")
  • 1.25" Eyepiece Adapter
  • Limited 1-Year USA Warranty, Extendable to Transferrable Lifetime Warranty with Registration
  • Table of Contents
    • 1Description

    Explore Scientific FE02-020 specs

    Magnification 2
    Barrel Diameter 2
    Dimensions 4.6 x 2.6" (11.8 x 6.6 cm)
    Weight 26.5 oz (752 g)
    Packaging Info
    Package Weight 2.8 lb
    Box Dimensions (LxWxH) 7.3 x 6.6 x 6.3"

    Explore Scientific FE02-020 reviews

    2x Focal Extender (2") is rated 5.0 out of 5 by 5.
    Rated 5 out of 5 by from The ES product container is amazing! Above & Beyond! There are many A+ reviews about the 2x Extender from Explore Scientific! Add my opinion as A+. Okay, so the glass is excellent and the machining of the unit is exemplary - fit & finish unbeatable. What puts this above & beyond are the instructions are easy to read & understand, and the box from ES is an amazing work of art and utility! Seriously! The box alone is probably worth keeping & displaying at any gathering! The extender is hefty and is packed well within; a given. The covering is based on Wil Tirion's Uranography & Graphic Design! My wife was more impressed with the boxes, than the gadgets! Guys, ponder it. I may survive this purchase. LOL!
    Date published: 2016-06-25
    Rated 5 out of 5 by from Very large, very solid option... I've only run one night with this but from what I can see, there was no degradation of visual or photographic by putting this into the optical path, the build is rock solid.
    Date published: 2014-06-24
    Rated 5 out of 5 by from The Best Cost a Little More But is worth it. This by far is the best focal extender in my collection. Flat from edge to edge with no image distortion. By far worth every penny. I will enjoy this extender for years..
    Date published: 2016-04-13
    Rated 5 out of 5 by from Great barlow adapter This is a amazing piece, you won't be disappointed with it. It is heavy, but worth it. A nice way to get more performance from your 9mm eyepiece on clear seeing nights. It comes with a 2 to 1.25 adapter as well. I picked up a separate 2 plastic plug so I would not have to use the metal adapter as a plug on the female end.
    Date published: 2017-02-19
    Rated 5 out of 5 by from Bigger, Brighter viewing of deep sky objects I use the 2 2X Explore Scientific Focal Extender with 2 Eyepieces in 25, 30, 35mm (70 degree FOV Bressers) primarily for viewing Deep Sky Objects: Clusters, Nebulas and Galaxies. My scope is a Meade LX 90 8 inch. The results with the 2 extender are pretty amazing. I begin by using a 20 or 25 mm eyepiece without the extender to find the object. Then for the increased magnification I switch to the 2 extender with either the 25 mm or 30 mm 2 eyepiece . Before getting the 2 extender I used a 1.25 2X extender (also Explore Scientific) with Plossls for viewing the deep sky objects. For the most part, with that setup the objects were bright and clear but, with the narrow FOV of the Plossls, not as dramatic. With the 2 extender and the 2 Bressers the clusters and nebulas are bigger, brighter, well defined objects. The clusters especially are bright and clear with many well defined points of light. The Galaxies are still fuzzy objects, but magnified. If there is a downside to the use of the 2 extender for me, it might be the weight. The combination of the 2 Extender, a 2 Diagonal, and a 2 eyepiece is heavy. But, so far, the scope performs just as it did with the 1.25 setup. Also, the 2 setup prevents the scope from going to zeinth. A 1.25 adapter is included with the extender so it is not necessary to have both the 1.25 and the 2 extenders. I am completely satisfied with the extender.
    Date published: 2016-06-30
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