Triple the magnifying power of your telescope eyepieces with this Neewer S-T11 3x Barlow Lens for 1.25" Telescope Eyepiecefrom Neewer. It's simple to use—drop the Barlow into your focuser and slide the eyepiece into the Barlow, tightening it in place with the knurled fixing screw. The Barlow accepts all standard 1.25" eyepieces. It also has a male M42x0.75 thread for attaching to camera T/T2 adapters. Light transmission is optimized by multiple full antireflective glass coatings and an antireflective interior finish for a bright, clear view. The Barlow is made of metal with a knurled rubber grip ring. Thanks to an internal brass compression ring, the fixing screw won't mar or damage your eyepiece.

Triples Eyepiece Magnification    Fits Standard 1.25" Eyepieces    Fully AR Multicoated Glass    M42x0.75 Thread for Camera Attachment    Metal Construction, Knurled Rubber Grip    Antireflective Interior Finish    Fixing Screw Won't Damage Eyepiece    Dust Caps for Both Ends

Accommodates standard 1.25" eyepieces

M42x0.75 male thread allows easy connection to T/T2 adapter for attaching a camera instead of an eyepiece

Multiple full antireflective coatings enable optimal light transmission for a bright, high-contrast image

Brass pressure ring holds the eyepiece securely so the fixing screw doesn't damage the barrel

Metal construction with knurled rubber grip ring

Related Questions and Answers

Q: 1. I have a Pentax 65 ED II spotting scope and Pentax SMC XW 10mm eyepiece. If I wanted a greater field of view, should I get a bigger eyepiece 20mm or smaller one 5mm?

A: Magnification in telescopes and spotting scopes is calculated by division. So a 20mm eyepiece will have a greater angle of view than a 10mm or 5mm.

Q: 2. What is the diameter of the opening in the eyepiece 2.3mm that I can peek through? 2.3mm or ?

A: It is about 0.9 (23mm)

Q: 3. Is this eyepiece compatible with the ETX-60AT telescope?

A: I have checked the Meade Manual available online. The telescope uses the standard 1.25 eyepieces. I would imagine that standard eyepieces are capable of achieving focus since they talk about buying extra eyepieces. With a 60mm 350mm focal length the 25mm and 9mm eyepieces supplied with the unit produce 14 and 39 magnifications and a 5mm would produce 70 magnifications. From my early experience with a longer focus refractor a practical absolute maximum magnification is twice the diameter of the front lens in millimetres (that is 120), providing the optics are good. What I am saying is, Don't expect to just keep adding magnification - the image will become very faint and fuzzy. Besides at such very high magnification strange things happen. The very small exit pupil projects floaters etc and granular 'things' in your eye directly onto your retina overlaying the 'real' image and becoming very annoying.The 5mm X-Cel has a nice wide 60 degree field, and at 70 magnification high power should prove a very satisfactory complement to the 25mm and 9mm if the telescope lens quality and optical system is good.Because the magnification is higher, the image will be fainter so it is more likely that you will use it for Moon, Planets, and Double Stars. Also it will require more care to locate objects. Still it should prove a good choice for higher magnification use.As you see from the illustration it will be bulkier and heavier but a price must be paid for the wide field and good eye relief.

Q: 4. I have 130 eq ...can i used zoom lens

A: As long as you have 1.25 mount hole on your telescope (I believe 130eq is 1.25 ), you can use this one. I have 127eq and I absolutely love this eyepiece!

Q: 5. Will it work with other brand t mounts?

A: Yes as long as the threading's are 42mm then it will work. That is correct.

Q: 6. Can this be used with Celestron 102 AZ telescope ?

A: Yes, the Celestron X-Cel LX 7mm Eyepiece (1.25"), can be used with the Celestron 102 AZ telescope.

Q: 7. Does this eyepiece have a T-thread to allow it to be directly mounted to a T-ring ? Can the front part be screwed off ?

A: My particular unit is very tightly screwed on and I do not want to force the eyepiece apart. There appears enough room for the M42 x .75 mm thread. That being said, I would contact Celestron directly for the attachment method and tread size

Q: 8. Can it fit on a celestron astromaster 114eq?

A: Yes this eyepiece can fit onto that scope since it takes a 1.25 Eyepiece opening.

Q: 9. Can you use filters with this eyepiece?

A: Yes, The 1.25” insert barrel is threaded to accept filters.

Q: 10. Is this eyepiece threaded at 42mm on the top to attach cameras like the XW eyepieces are?

A: The Pentax SMC 8-24mm Zoom Eyepiece (1.25") BH #PEEP2060X • MFR #70509 does no have any threads for additional add on.