With magnifying power of 46x and easy, both-eyes-open viewing, the BT-127XL-SD Binocular Telescope from Oberwerk provides a satisfying alternative to traditional telescopes for astronomical or long-range terrestrial observation. The BT-127XL-SD is built with broadband fully multicoated, super-low dispersion objective lenses that minimize chromatic aberration or "color fringing." Unlike a telescope, the optic is fitted with prisms that cause the image to be upright, so along with celestial objects, you can observe distant ships, breaching whales, mountain peaks, etc.

The BT-127XL-SD can be "go-to" automated by using the separately sold iOptron HAZ31 Strain Wave Alt-Az Mount. The optical tubes accept all 1.25" eyepieces and are held at a 45° angle for comfortable viewing. The tubes have a large interpupillary adjustment range, so everyone from children to adults can enjoy the view. Binocular telescopes are far more portable than standard telescopes and do not require specialized mounts—a video tripod with a 3/8"-16 or 1/4"-20 mounting stud will do, provided it is rated for a 24.5 lb payload. Oberwerk recommends its TR3 hardwood tripod or the Manfrotto 161MK2B, which has a crank-up elevator. Either tripod can be configured with the Oberwerk XL-280 Fork Mount or Manfrotto 612 NitroTech Head.

5" Super-Low Dispersion Objective Lenses    Full Broadband Multicoating    Two 14mm Eyepieces for 46x Magnification    Accepts All 1.25" Eyepieces    45° Angled Eyepieces    Nitrogen-Filled, Fog & Waterproof    Wide 50-80mm Interpupillary Range    1/4"-20 and 3/8"-16 Mounting Sockets    Sturdy Aluminum-Frame Case

• 1.25", 14mm focal length eyepieces for 46x magnification, ideal for long-range terrestrial use or astronomical viewing
• Super-low dispersion objective lenses minimize color fringing
• Antireflection fully multicoated optics maximize light transmission for bright and clear images with accurate color rendition and improved contrast and clarity
• Wide 70° apparent angle of view
• Collimation certified to 163x

• Accepts any 1.25" eyepiece
• 45° angled eyepieces for comfortable use
• Large 50-80mm interpupillary distance adjustment range accommodates children and adults
• With separately sold iOptron HAZ31 alt-az mount, the BT-127XL-SD can be "go-to" automated
• Relatively lightweight, waterproof and nitrogen-filled magnesium body
• Handle is a Picatinny rail for accessories such as finders or laser pointers
• 3/8"-16 and 1/4"-20 tripod mounts
• Tested and tuned to perfection prior to shipping

Related Questions and Answers

Q: 1. Hi.Will these work on a Sky Max 127mm 'Maksutov-Cassegrain' Telescope, as you can probably guess I'm pretty new to astronomy? Brian

A: This Viewer should fit your scope fine, as long as you have a 1.25 eyepiece opening. You might have some focusing issues, which you might need to get 2X Barlow Eyepieces. I would try the piece out first, then if you have any focusing issues get the Barlow Eyepieces.

Q: 2. What is the replacement Nikon binocular for the 10x50 WX IF model?

A: After Nikon discontinued the Nikon 10x50 WX IF Binocular they did not replace it with a suitable replacement. My suggestion would be the Swarovski 10x50 EL50 Binocular (B&H# SW10X50ELG)

Q: 3. How do you focus these bad boys? The way I understand it is you focus each ocular at a fixed target. once the left and right ocular are adjusted perfectly to your eyes..thats it..(?). what happens if you want to zero in on a subject 80 yards closer (or further) from your zero'ed in subject.. do you have to recalibrate each ocular again?

A: We can see the Nikon 10x50 WX IF Binocular (Black) does have an individual focusing system for each Ocular, described in the Overview of those binoculars: "To ensure the sharpest views possible, the WX is built with a helical focusing mechanism on each individually focusing eyepiece. Eschewing the conventional center focusing system not only allows precise focusing for any user, but it also ensures the integrity and longevity of its waterproofing. The helical mechanism moves the eyepieces forward and back without rotating the eyepiece lenses, maintaining a centered optical axis that enables even more clarity and sharpness.

Q: 4. will this work with Leica Noctivid 8x42 binoculars?

A: I have the 10X42 Noctivid - it works fine.Enjoy. I hope this helps.Neal

Q: 5. Does this can be used for Swarovski SLC 10x56? The Swaro's adapter is too expensive.

A: Unfortunately it cannot. The Swarovski SLC have been discontinued. We do have the correct tripod adapter for them. You will find it on our website this is the part number B&H # SWTASSLC.

Q: 6. will this fit my silk sdv-20 tripod? There is no screw on the bottom but a plastic swivel release.

A: That is a Celestron Binocular Tripod Adapter. You would need a -20 screw on the release plate of your tripod to mount the binocular mount.

Q: 7. What is the minimum IPD?

A: 54mm (2.13 inches)

Q: 8. Is it compatible with Celestron AstroMaster 25x70 binoculars?

A: The Celestron 25x70 SkyMaster Binoculars (Black) BH #CE25X870SM • MFR #71008 comes with its own tripod mounting adapter. Celestron Binocular Tripod Adapter BH #CEBTAY • MFR #93524 The binoculars are too bulky for the Leica Binocular Tripod Adapter BH #LETABN • MFR #42220

Q: 9. Shipment to sweden?

A: There are currently no shipping methods available to Sweden for the Celestron Stereo Binocular Viewer.

Q: 10. Which Arca fitting do I need to attach the Leica Binocular Adapter to the tripod?

A: The Leica Binocular Tripod Adapter has a standard 1/4-20 female so it can be used with any QR plate that has a standard 1/4-20 stud. Most Arca compatible plates use a 1/4-20 stud.