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Telescopes
Eyepieces +
Mounts +
Astrophotography
Microscopes
Sport Optics
- Alpen Binoculars
  - Apex & Apex XP
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  - Shasta Ridge
  - Kodiak
  - Wings
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- Bresser Binoculars
  - E-Series
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Filters

Brand - Alpen Remove filter

Aperture

1. 21mm - 34mm
1. 40mm - 90mm
2. 100mm - 127mm
3. 130mm - 165mm
4. 170mm +
60mm

Brand

Explore Scientific
Bresser
Explore FirstLight
National Geographic

By Use

Birding

Features

ED Glass
Waterproof

Focal Length

2. 600mm - 988mm
3. 1000mm - 1900mm

Focal Ratio

2. f/4.1 - f/6.5
3. f/7 - f/9.8
4. f/10 - f/15

Magnification

2. 10x - 20x
20x to 60x
High Power

Maximum Range

100 yards

Optical Design

Dobsonian
Refractor

Prism System

Roof

Series

AR Doublet
ED Triplet APO
FirstLight
FPL-53
Pirsch

Skill Level

Beginner
Intermediate
Professional

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Brand - Alpen Remove filter

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