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1. Refractor Telescopes (8)
2. Ritchey-Chretien Telescopes (1)

Telescopes

1. Optical Tube (11)

Aperture

1. 3" & Under (4)
2. 3.1" - 4"  (4)
3. 5.1" - 6"  (2)
4. 7.1" - 8"  (1)

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2. Imaging Newtonian (2)
3. Optical Tube Assemblies (5)
4. Reflector Telescopes  (2)
5. Refractor Telescopes (8)
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1. f/2.1 - f/4.0  (2)
2. f/4.1 - f/6.0  (5)
3. f/6.1 - f/8.0  (3)
4. f/8.1 - f/10.0  (1)

Telescope Series

1. Astro-Tech ED Refractors (5)
2. Astro-Tech EDL Refractors (1)
3. Astro-Tech EDP Refractor (1)
4. Astro-Tech EDT Refractors (1)
5. Astro-Tech Imaging Newtonians (2)
6. Astro-Tech Ritchey-Chretiens (1)