BRESSER 4920320 Monocular

One Eyepiece For Every Occasion, With Very Good Field Correction And Large Field Of View: - The Bresser Zoom Eyepiece Deluxe Covers The Large Focal Length Range From 8 To 24 Mm. These Are Also The Focal Lengths Most Frequently Used With Most Telescopes. Especially For Instant Observations, Where You Don´t Want To Pack A Whole Suitcase Full Of Eyepieces, The Zoom Eyepiece Is A Good Choice. The Deluxe Version Offers With Its Particularly Advanced Optical Design With 9 Elements In 6 Groups An Even Better Field Correction And Sharpness, Combined With A Large Apparent Field Of View Of 40 Up To 62 Degrees. Always The Ideal Magnification On Hand: - A Quick Turn And The Ideal Magnification For You Is Set. The Adjustment Is Stepless From 8 To 24 Mm Focal Length. This Eliminates The Need To Always Change Eyepieces. Comfortable Viewing: - The Bresser Zoom Eyepiece Deluxe Offers A Large Comfortable Eye Relief (Ler) Of 20 Mm To The Eyepiece Lens. This Means A Comfortable View Even During Longer Observation, An Important Criterion Especially For People Wearing Glasses. The Rubber Eyecup Can Also Be Individually Adjusted By A Twisting Movement. Advanced Optical Design: - To Achieve The Best Possible Image Over The Entire Focal Length Range, A Particularly Advanced Optical Design With 9 Lenses In 6 Groups Is Used. The Full Multi-Coating On All Lens Surfaces Also Guarantees Maximum Light Transmission. To Effectively Suppress Unwanted Reflections, All Lenses Are Carefully Blackened At The Edges. Thus, The Image Produced Offers The Maximum Possible Contrast And Image Brightness. Compact And Solid Design: - The Bresser Zoom Eyepiece Deluxe Is Made Entirely Of Black Anodised Aluminium. It Has An Extremely Solid And High-Quality Material Appearance And Is Long-Lived, Even With Extensive Use. The Precise Zoom Mechanism Can Be Adjusted Safely Through The Rubberised Adjustment Ring. A White Laser Engraving With Focal Length And Pointer Arrow Shows The Current Focal Length Setting Even In Low Light. Achievable Magnifications With Common Telescope Focal Lengths: - 350mm: 44 - 15x - 400mm: 50 - 17x - 500mm: 63 - 21x - 650mm: 81 - 27x - 750mm: 94 - 31x - 900mm: 113 - 38x - 1000mm: 125 - 42x Features: - Deluxe Version With Even Better Field Correction And Sharpness - Large Apparent Field Of View 40 Up To 62 Degrees - Zoom Eyepiece With Stepless Focal Length Adjustment From 8-24 Mm - One Eyepiece Covers A Wide Focal Length Range - Stepless Adjustment To Ideal Magnification - Quick Adjustment Of Magnification Without Changing Eyepieces - Comfortable Eye Relief Of 20 Mm (Ler = Long Eye Relief) - Adjustable Rubber Eyecup To Adjust To Ideal Interpupillary Distance - Also Very Suitable For Eyeglass Wearers - Compact And Solid Design - Made Entirely Of Black Anodised Aluminium - Aluminium Dust Cap With Thread - Very High-Quality Material Appearance - Precise And Robust Zoom Adjustment Mechanism - Rubberised Grip Surface For Zoom Adjustment - White Laser Engraving With Focal Length And Pointer Arrow - Focal Length Range 8-24 Mm Freely Adjustable - Optical Design: 9 Lenses In 6 Groups - All Lens Surfaces Have Full Multi-Coating - Zoom Eyepiece With Stepless Focal Length Adjustment 8-24 Mm - Deluxe Version With Better Field Correction And Sharpness - Large Apparent Field Of View 40 Up To 62 Degrees - Stepless Adjustment To Ideal Magnification - Comfortable Eye Relief Of 20 Mm (Ler=Long Eye Relief) - Adjustable Rubber Eyecup To Set The Ideal Distance - Also Very Suitable For People With Glasses - Made Entirely Of Black Anodised Aluminium - Precise And Robust Zoom Adjustment Mechanism - All Lens Surfaces With Full Multi-Coating For A Bright And Crispy Image Specifications: - Eyepiece Sleeve Diameter: 1.25 Inches / 31.7mm - Filter Thread In Sleeve: M28 X 0.6 Mm (Standard 1.25´´ Filter Thread) - Eyepiece Weight: 315 G - Length Of Eyepiece: 102 Mm - Diameter: 52 Mm - Focal Length: 24 Mm - Apparent Field Of View: 62 Degrees - Lenses/Groups: 9/6 - Eyepiece Barrel Diameter: 31.7 Mm - Eyecups: Twistup Eyecups - Eye Relief: 20 Mm - Total Height: 102 Mm - Net Weight (Without Access.): 315 G - Length Of The Eyepiece Barrel: 24 Mm