The 31 mm Luminos 82-Degree Eyepiece (2") by Celestron consists of 6 elements and is fully multi-coated for crisp, sharp views. All six Luminos eyepieces are parfocal.  

The Celestron Luminos Eyepiece Series Highlights

• 82-degrees field of view: For high and low magnifications.
• Retractable eyecups: Ultra-low profile for eyeglass wearers.
• Parfocal eyepiece:  Little or no focusing is needed when changing from low to high power.
• Threaded barrels: Accepts 2" Celestron thread-in filters.
• Polished and hard anodized aluminum barrel:  Scratch resistant and high-end appearance.
• Rubber gripping ring:  For secure handling and smooth control of eyecup. 

Celestron 31 mm Luminos Eyepiece Specifications

• Focal Length: 31 mm.
• Angular Field of View: 82 degrees.
• Eye Relief: 27 mm (1.06"es).
• Field Stop Diameter: 47 mm (1.85"es).
• Optical Coatings: Fully Multi-Coated.
• Optical Design: 6-Element.
• Barrel Size: 2"es.
• Parfocal: Yes.
• Weight: 40 oz (1134 g).

 

Celestron Product Number: 93435 

• Enjoy wide 82-degree views with Celestron Luminos Eyepieces.
• Retractable eyecup pops up when you need it, drops down when you don’t.
• Sturdy anodized aluminum barrels are threaded for filters.
• A rubber grip keeps the eyepiece securely in your hands, even when it’s cold or you have gloves on.