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Telescopes
Eyepieces +
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Astrophotography
Microscopes
Sport Optics
- Alpen Binoculars
  - Apex & Apex XP
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  - Shasta Ridge
  - Kodiak
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- Bresser Binoculars
  - E-Series
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Accessory Type

Focuser

Aperture

1. 40mm - 90mm
100mm
2. 100mm - 127mm
2. 40mm - 52mm
3. 130mm - 165mm
3. 56mm - 70mm
4. 170mm +
80mm

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Explore Scientific
Alpen
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QHY
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Features

ED Glass
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1. 3mm - 10mm
2. 11mm - 20mm
2. 600mm - 988mm
3. 1000mm - 1900mm
3. 24mm - 30mm

Focal Ratio

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

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Series

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