Meade Series 4000 1.25" 2X Short-Focus Barlow Lens

A Barlow lens is used to effectively increase the magnification of your eyepieces in a telescope. For example if you would normally see an image at 30x then using that eyepiece in conjuction with the Barlow gives you an effective 60x magnification. One Barlow can be used with all of your different eyepieces in turn, making for a cost effective way to have a wider range of magnification options.This Barlow can be used on any telescope that uses 1.25" eyepieces. It does not have to be a Meade telescope; all you need is that the size of the eyepieces be the same. (1.25" is one of the more common sizes but check your telescope to be sure first.)To use this lens, pull your eyepiece out of the telescope and put the Barlow lens in first. The eyepiece then gets placed back into the end of the Barlow. Refocus - and you're done - the image should now be 2x. Simple.I've used this lens and it is a fine lens for starter telescopes. I did not see any increased chromatic aberration. The quality of the glass and the coatings are all acceptable. Obviously you can spend a whole bunch more and get even more premium glass, and Barlow lenses that go up to 3x or variable amounts, but for most backyard astronomers and folks with relatively small or starter telescopes, this is all that you need and is a good value.One word of caution on telescopes: bigger is not always better. If you magnify an image too much you'll get dim and/or fuzzy images. But as long as you stay within the range of what the rest of the optics in your telescope can reasonably deliver, a Barlow lens is a great addition. (In particular I often use my Barlow to help out my low powered lens rather than my high power. I find I get higher magnification but with the better eye relief that comes inherent to the lower powered eyepieces.)

This is a great product at a very economical price and even worked surprisingly clear with a 4mm eyepiece . The coated lenses really pick up light the down fall being that I may have to use a light filter to enhance lunar viewing.Currently using it on a economical Meade 70mm objective by 700 mm focal length refractor scope also available at Amazon.com .This is something expected but well worth the purchase being able to enjoy spectacular close ups of the weird occurrences going on with the moon lately after it was affected by the recent comet Ison. Hence pay close attention to the moon !

I wanted to be able to get high magnification with a longer eye relief. This barlow delivered beautifully. I dropped in a 10 mm eyepiece and compared head- to- head with a 5mm alone. Magnification was a perfect match and even did as well as well on a star test ( 8" Orion Sky Quest dobsonian). The only caution is that the focuser has to be turned in quite far to get it in focus with a 10 mm eyepiece. Depending on your telescope it may not reach in far enough. However for an affordable barlow the optics are very good.

A High quality product and it works attached between the Camera T-Ring and Telescope Focus Tube with no eyepiece. Great Moon Shots and also Jupiter's tiny Moons on the first night.

Pretty good, don't expect an entirely new view of the nebulas that's unrealistic but this does show more detail than normal and contrast more. The background gets darker but the nebulas retain its light which is how its meant to work and by doing this more detail pops out.

Not a great.

Compared to the 'comes with 'barlows' the Meade #126 2X Barlow lens is outstanding. Not expensive but does the job, It has a large clear lens and barrel that fits tight into the focuser. No wobble and no problems. Enjoy doubling your lens power!! Bob Sanford kc5smc

It works but constructed of low quality glass and while the light is reduced from magnification as expected, even in the dimmer magnified object it never reaches full focus but always stays slightly hazed. Would not purchase again and considering a return, but we do still want to explore more of the skies with our new Orion SkyQuest XT8 but unfortunate this eye piece doesn't deliver as we had expected it to. Had we known before purchasing, we'd have saved for a better quality addition.