Explore Scientific 68° Series 1.25" 24mm Waterproof Eyepiece

The 68° Series 24mm delivers wide views through 6-element optics in a 1.25" barrel. It has argon-purged waterproof construction.

Key Features

• 6-element optics: low-dispersion and high-refractive-index glasses produce sharp, well-corrected images to the field edge
• 68° apparent field of view, while maintaining a 1.25" barrel format
• Argon-purged waterproof housing, sealed against moisture and fog
• Water-tested. Each eyepiece is tested in one meter of water for 30 minutes.
• Multilayer deposition coatings on all air-to-glass surfaces with edge-blackened elements for high contrast. Each coating has 15 layers.
• Fold-down silicone rubber eyecup for comfortable extended viewing. It is also removable, and the 18.4 mm of eye relief leaves room for eyeglasses.
• 1.25" barrel delivers wide fields without requiring a 2" focuser
• Parfocal series. The 68° Series eyepieces focus at nearly the same point, so switching needs little refocusing.

Ideal For

• 1.25" focuser owners who want a wide 68° field
• Eyeglass wearers who want to keep their glasses on while observing
• Deep-sky observing with a wide field and low-dispersion glass

Accessories & Compatibility

• FirstLight 80 (640 mm, f/8). In the Explore FirstLight 80mm Go-To Tracker Combo, in its 1.25" 90° diagonal, the 24mm gives 27x, a 3.0 mm exit pupil and a 2.4° true field.
• 10" Dobsonian (1270 mm, f/5). In the 10" f/5 Hybrid Truss Tube Dobsonian, through the 1.25" adapter of its 2" focuser, it gives 53x, a 4.8 mm exit pupil and a 1.2° true field.
• Filters. The barrel is threaded for filters, such as the 1.25" Nebula Filter CLS, a light-pollution filter for nebulae and galaxies.