Astronomy Research
Bardou and Sons
08/11,2020
Telescope Type: Floor-Standing Refracting
Country of Origin: France Date: c. 1890-1910
Objective Diameter: 4-inch (100-mm) OTL：55 "
Telescope Type: Floor-Standing Refracting
Country of Origin: France Date: c. 1890-1910
Objective Diameter: 4-inch (100-mm) OTL：55 "
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