Explore Scientific 68° Argon-Purged Waterproof 16 mm 1.25" Eyepiece
Extreme Wide Field 16mm Eyepiece!
Delve into the world of durable eyepiece design with the Explore Scientific 16 mm 68° series eyepiece! The Explore Scientific 68° eyepiece series uses a combination of low dispersion and high refractive index optical glass, paired with durable multilayer deposition coatings to produce high contrast, high resolution, and superior flat field views!
The Explore Scientific 16 mm eyepiece offers an impressive 11.9 mm eye relief, ensuring comfortable extended viewing sessions. Combined with its 68° apparent field of view, this eyepiece delivers an immersive observational experience. Designed with durability in mind, these eyepieces are argon-purged, making them resistant to water intrusion and capable of withstanding temperature variations. This robust design ensures reliable performance and longevity, allowing for years of dependable use in a variety of environments! In addition to argon-purging, this eyepiece comes equipped with a 1.25" thread for compatible filters. And to round out the features of this high-quality 16 mm 68° eyepiece: Explore Scientific has also included a silicon rubber eyecup for comfortable viewing!
The All-Around Power of Explore Scientific 68° Eyepieces!
Whether it's observing the planets or viewing faint, deep-sky objects, the Explore Scientific 68° series eyepieces are an all-around excellent choice for a variety of astronomical observations!
Parfocal Perfection!
The Explore Scientific 68° eyepieces are designed to be parfocal, meaning they share a common focus point regardless of the focal length. This feature makes it incredibly convenient to switch between eyepieces of different focal lengths during your observation session, as only minimal focus adjustments will be needed. This ensures you spend more time observing and less time refocusing. It also makes this Explore Scientific eyepiece an excellent choice for both beginner and experienced astronomers seeking an efficient observing experience!
Extended Endurance with Argon-Purging!
While many eyepieces are nitrogen-purged to block moisture, dust, and mold, Explore Scientific enhances durability by argon-purging these 16mm eyepieces. The larger argon atoms form a stronger, more secure seal. Argon atoms are larger than nitrogen atoms and, therefore they are less likely to leak or diffuse their way through the seals over the life of the eyepiece. Additionally, argon cools slower. Being argon-purged buffers the effects of rapid temperature changes in the optics. Argon also has superior inertness when compared to nitrogen (i.e. forming few or no chemical compounds with other elements) that prevents adverse reactions with eyepiece components and extends the longevity of the internal components. It also prevents chemical reactions with other elemental contaminants that may be introduced through a weakened seal. By making the eyepiece body argon-purged, this waterproof eyepiece's internal elements will remain as pristine as the day they were assembled!
Comfortable Viewing Experience
Each eyepiece will include a removable, soft silicone rubber eyecup for the comfort of the observer, and, as experienced astronomers know, eye comfort is critical when trying to observe at the visual limits of the telescope for visual observations.
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