The 2" diameter barrel Explore Scientific 68° 40mm Eyepiece (2")from Explore Scientific 68° 40mm Eyepiece (2")is a wide-field telescope eyepiece designed for detailed close and deep-space observation. It uses low-dispersion, high refractive index glass with anti-reflective fully multi-coated optical surfaces to ensure bright, high-contrast images with true color transmission across the entire wide field of view. Its wide AFoV and long eye relief makes this eyepiece ideal for comfortable viewing for extended periods with or without eye glasses. The contrast is enhanced by a fold-down rubber eyecup that prevents stray light from leaking into your eye. The eyepiece features a textured surface for a sure-grip when changing it out, and it is argon-filled for water and fog-proof performance when used in extreme temperatures and climates.

40mm Focal Length    68° Field of View    2" Diameter Barrel    Fully Multi-coated Optics    Argon-Filled, Water and Fogproof    Slip-Resistant Textured Surface    Fold-Down Eyecup

68° apparent field of view displays a broad image with minimal optical distortion, ideal for detailed observation

Images have true color transmission across the entire field of view, even as the observed object approaches the field stop.

Wide exit pupil, long eye relief ensure comfortable long-duration observation through your telescope

Fold-down eyecup prevents peripheral light from leaking into your eye, causing blurring and dimming of the image

Related Questions and Answers

Q: 1. Will a Skywatcher Evostar 72ED telescope with a 2 inch diagonal, hydrogen alpha Quark filter (2 pounds), and eyepiece (1 pound) mount to this?

A: The Explore Scientific FirstLight EXOS Nano Mount with ST1 Tripod is for Small Scopes/Refractors up to 15 lb. This should be able to hold the Sky-Watcher Evostar ED APO 72mm f/5.8 Refractor Guidescope with the diagonal, filter, and eyepiece.

Q: 2. Will a Celestron Omni XLT 120 telescope mount on this? What is the weight capacity? Would any adaptor(s) be required? It the Vixen dovetail included?

A: It will work. I there a Vixen plate attached to the OTA rings?

Q: 3. What is the weight of the tripod amount? Not the shipping weight but the actual net weight.

A: The tripod in the Explore Scientific FirstLight EXOS Nano Mount with ST1 Tripod kit weighs 17 pounds according to the manufacturer.

Q: 4. What is the differance between the twilight 1and the EXOS nano? Do they do the same functions.

A: The Explore Scientific FirstLight EXOS Nano Mount with ST1 Tripod is an equatorial mount with a maximum height of 45 inches. The Twilight 1 is an Alt-Az mount with a maximum height of 55 inches. Both are rated to support up to 15 pounds.

Q: 5. Does the EXOS nano adj. Knobs move as slowly as the twilight 1 and can you mount a celestron travel 70 on the EXOS Nano?

A: No, the Explore Scientific FirstLight EXOS Nano Mount will not move as slowly as a Twilight 1 mount. As long as you can mount the Celestron Travel 70 on a Vixen-style universal mount, it will mount.

Q: 6. What is the thread pattern?

A: The Explore Scientific Extension Tube for Select Rack & Pinion Focusers (1") has a threading of M54 x 0.75mm.

Q: 7. What is the load capacity?

A: About 12 lbs.

Q: 8. Will this work for a EQM 35 pro?

A: Yes, the Explore Scientific Twilight Medium-Duty Tripod Legs (White) BH #EXTLST2W • MFR #TL-ST2W-00 will work with the EQM 35 Pro.

Q: 9. Does a skywatcher 130pds mount on this?

A: Yes it will

Q: 10. what is the diameter of this tube?

A: ask MFR