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Telescopes

1. Optical Tube (1)

Spotting Scope Manufacturers

1. Questar (1)

Spotting Scope Series

1. Questar Birder (1)

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1. No Mount Optical Tube Only (1)

Aperture

1. 3.1" - 4"  (1)

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1. Maksutov Telescopes (1)
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Focal Ratio

1. f/14.1 - f/15.0  (1)

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1. Questar 3.5" Maksutov Cassegrains (1)

Spotting Scope Aperture

1. 81mm & Up (1)

Spotting Scope Optical Design

1. Maksutov-Cassegrain (1)