Built in Germany to Zeiss' exacting standards, the Alpine Astronomical Baader 2x Carl Zeiss Abbe Barlow Lens features extra-low-dispersion glass elements and anti-reflection fully multi-coated optics to maximize light transmission and produce bright and crisp high-contrast images across the entire field of view. By adding an optional T-2 extension tube, the magnification can be boosted to 3x for even higher magnifications.

Designed for 1.25" eyepieces and drawtubes, the Barlow gets an upgrade from the conventional bronze locking ring and set screws with the addition of the 1.25" Baader Click-Lock eyepiece holder. This system uses three long roller bearings to hold and center the eyepiece firmly in place without marking or marring it. A simple twist locks and unlocks the clamping system for fast eyepiece changes, and the top of the clamp comes off to reveal T-2 mounting threads that accept camera-specific T-rings and adapters. The top of the Click-Lock has 6.5mm of travel for use as a micro-focuser or to adjust its height for matching other accessories.

2x Magnification    Extra-Low-Dispersion Glass    Fully Multi-Coated Optics    1.25" Barrel and Snout    Baader 1.25" Click-Lock Eyepiece Holder    3-Point Clamp for Accurate Centering    6.5mm Micro-Focusing/Adjustment Travel

Related Questions and Answers

Q: 1. My Nikon Action EX 16x50 binos have an outside diameter of exactly 60mm. Should I order the 60mm filters or the 70mm?

A: The Alpine Astronomical 60mm Baader AstroSolar White-Light Solar Filter for Binoculars (Single) would be too large to fit 16x50 binoculars. This Daystar kit would fit instead: https://bhpho.to/3qFnkJe

Q: 2. in continuation with previous question. So do i need to purchase Alpine Astronomical Baader T-2 90 Prism Star Diagonal Housing separately ?

A: It should come with everything you may need: In the Box Alpine Astronomical Baader MaxBright II Binoviewer (1.25") Carrying Case Zeiss Micro-Bayonet Mounting Adapter Limited 2-Year Warranty Alpine Astronomical Glasspath Corrector 2.6x for Maxbright/Mark V Binoviewers Limited 2-Year Warranty Alpine Astronomical Baader 2" T-2 Nosepiece Limited 2-Year Warranty I dose not come with eyepieces.

Q: 3. What storage container would you recommend for a pair of these filters? Thanks

A: It would be best to use the box the filter comes in or use this Print File box: https://bhpho.to/3uHvHCQ

Q: 4. Baader and other sellers offer an additional M48 insert with this package. Does B&H offer this?

A: Yes the Alpine Astronomical Baader T-Ring Camera Adapter (Sony E/NEX) includes an M48 thread for more compatibility options.

Q: 5. Will this fit a M48 X .75 thread?

A: This is an M42 Thread, so it will not fit that threading size.

Q: 6. Why are there two Herschel wedges, photo and visual?? why can't one wedge be used for both with some adjustments?

A: The Alpine Astronomical Baader Cool-Ceramic Safety Herschel Solar Photographic Prism Mark II includes all the items in the visual version with the addition of 1.8, 0.9, and 0.6 neutral density filters. Aside for the extra filters, the other components are exactly the same.

Q: 7. Skywatcher Evoster 100 ED. Would this size fit my telescope?

A: Yes this Filter will work with that Model.

Q: 8. 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: 9. With the Barlow attached, this effectively goes between 3.5mm - 10mm, right?

A: With a 2X barlow correct

Q: 10. Baader sells this part packaged also with an M48 ring insert (only in the case of the Sony adapter). Do you include this extra ring?

A: Here is a list of the Baader rings B&H sells for Sony https://www.bhphotovideo.com/c/products/astrophotography-adapter-rings-extension-tubes/ci/48682?filters=fct_brand_name%3Aalpine-astronomical&searchWithin=sony