Features:

  • The value must have 5x barlow lens doubles the magnification of any 1.25 inch eyepiece;double the capacity of an existing set eyepieces at the cost of a single eyepiece
  • Quality aluminum stock and black anodized body with M42x0.75mm thread;work as a t adapter;connect DSLR or SLR camera to telescope easily via a separate sale t ring adapter
  • 3 element APO;2 group lenses with multi coated optics design make image more crisp and sharp;qulity and shorty aluminum stock and black anodized body for a convenient long term use
  • Connect DSLR SLR camera to telescope easily;the T ring adapter you buy separately depending on the model of camera
  • 2 element one group broadband green film multi coated optical glass;the housing is blackened to maximize image contrast;both that gets high quality observation without additional chromatic
Good stuff.

Made the moon from small to in my face lol Pic is with my phone thu the lense, it looks even better than the pic shows! My scope is an Orion and nothing special.

Up Close With Planets!

This 5X barlow is just what my son and I needed to get up close and with the planets. The view is slightly dimmer and a little harder to focus with the higher powered eyepieces. But with the low powered eyepieces, this works really GREAT! I had never heard of this company before but this barlow is high quality in my opinion. The high end 5x barlows were way more expensive for what we needed. I definitely recommend this product.

Five Stars

This worked great to view Jupiter with our 4" Bushnell Voyager.

I love this lens. Good fit for short focal length reflectors.

My telescope is 5'' f/5 newtonian reflector. Its usable maximum magnification is about 260X. But, bundled high power eyepiece gives only 65X. Whenever watching moon surface, I wanted more magnification. In theory, 4X barlow lense should be ideal, utilizing maximum potential, but not more. In reality, even 3X barlens was out of reach with its prohibitive price. (Considering the price of telescope itself.) With the help of amazon's powerful sorting by price (from low to high), I met this lense. The price is good and seller's specification says it is APO design, which is typically high quality. But, there was a very negative review from other user. Anyway, I wanted utilize all the potential of my telescope, and I bit the bullet and tried it myself. Fortunately, the result was rewarding. It is a little long and heavy, but it gives high magnification power and clear image quality only for $25. Considering its wonderful price tag, I give it 5 stars. Con This lens is a little long and heavy that it easily breaks the weight balance of telescopes. (So, negative review from other user who mentioned focal length has its own value.) With weight balance broken, the telescope get unstable and pointing get a little tricky. High magnification power of this barlow lens, make the problem worse. Even the slightest movement from unstabilization also get magnified, And the target gets out of the field of view easily. There are 2 common ways to recover the balance. 1. Re-balancing - Loosen the bolt holding the dovetail and adjust the positon and tightening the bolt. - Check if balanced, and if not repeat it again. - No additional monetary cost but irritating. (You should go through this procedure whenever attaching this barlow lens.) 2. Attaching some magnet to the rear part of the telescope, fuctioning as a counter-weight. - Purchasing some magnet means additional monetary cost, but remember?, this lens is such a bargain. - Attaching some magnet is much more convenient than loosening & re-tightening a bolt, and if the OTA does not have dovetail plate, this is the only way. - In theory, about the same weight (as that of this lens) of magnet will be needed. If not sure about the proper size of magnet, purchasing multiple small magnets and adjusting the number of magnet attached, is a safe choice. (Small magnets easily get sticked to each other as a bundle, so handling a large number of small magnets is manageable.) There is also a problem with too high magnification. With 5X, it is so easy to go over the maximum capability of the telescope optics. (Maximum usable manification is usually 2 * aperture in mm.) And after the maximum, image get blurred. In my case, this barlow lens and bundled high power eyepiece together gave about 120% of the maximum, and image quality get degraded a little. Pro At such a bargain price, it gives 5X magnification power with good enough image quality. With low power bundled eyepiece attached to this lens, image quality is quite good. With high power bundled eyepiece and this lens gives 120% of the maximum magnification, and image get blurred a little, but I am happy to utilize all the potential of the optics. Detailed view of the Moon surface is very satisfying. It is good to keep portability with low focal length, and get high magnification, too, with this lens. Caution You need stable mount and well-aligned finderscope (or red dot finder). It feels like the telescope got 5X more sensitive with this lens attached. Unstability of the mount and misalignment of finderscope get also magnified. That's why weight re-balancing is important. Conclusion. A little long and heavy. Easily breaks the weight-balance. But after recovering the balance, it gives 5X magnification with good image quality. It is a perfect fit for short focal lengh telescopes, which typically lacks magnification power. If you need higher magnification, but worried about additional expenditure, I definitely recommend this lens.

Great purchase. I am using this on a Celestron ...

Great purchase. I am using this on a Celestron Cometron 114AZ. Paired with the 10 mm Kellner eyepiece that came with the telescope you can clearly see Saturn and it's rings. Of course it's not like super sharp but definitely you can tell it's Saturn. The pic is from a Note8 attached to the scope. Looks much better with the naked eye than through a phone camera. I can't compare it to anything else though so who knows if a better quality one will be any better. I'm happy with it.

Good Value optic

Works good with 114mm celestron newtonian, pretty much the max magnification barlow lens you can use. Works really well with 30mm lens down to about 12mm or 14mm. At 10mm and 8 mm objects don't focus in quite as well as they should so hitting the limits of the telescope there.

Awesome value.

I was very skeptical about purchasing this barlow, then I figured ,well it's only $17 and I can always send it back. Let me just say that the quality it's way beyond of what I'd expected at this price point. Saturn with a 150/750 Newt, ZWO ASIMC120.

Good value, purchase with confidence

Really is a 5x Barlow of good quality. Worth more than what it cost, in my opinion. I have a laser collimator from SVBony and it is a great product, too (accurate out of the box). Their customer service is responsive to questions and helpful.

Great Barlow from a great price!

Great 5x Barlow. I see that other reviews claim it’s not 5x or 3 element however I disagree. This is a solid 3 element that most certainly is 5x. It is a great addition to my nexstar 8se. There are some sacrifices that you make when using a Barlow of this magnification though. You will see images that are less sharp, sometimes color accuracy will be off, and overall field of view will degrade. That being said, you have to know what you are getting into when you start looking at a Barlow that is more than a 2x.

Nice price and good quality.

Nice price, but kind of weird effect when i use it with the moon and my dslr camera. The image was really dark, still trying to figure why. 02/03/2019 - I have to apologize, i am new to astronomy and didnt realized the more magnification, the more light is lost. The problem was the magnification, i was expecting the same amount of light, but its working just as expected. I bought a 2X barlow from SVBONY too, the light was better and the maginification was right for the job. So its a 2 thumbs up for the Barlow.

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