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The optical tube is really the heart of your night time exploration. Sizes range from 50mm to 20" in diameter as well as f/ratios from f/2.2 to f/15. The optical designs range from simple doublet refractors to complex cassegrains with built-in field flatteners. There is literally something for everyone here, you just have to decide what path you want to walk down. We are always here to help with any questions you have.
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Original price $979.99 - Original price $979.99Original price$979.99$979.99 - $979.99Current price $979.99Explore Scientific AR152 6" f/6.5 Achromatic Doublet Refractor Optical Tube
Explore ScientificMore on the wayThis 6" Explore Scientific AR152 achromatic refractor optical tube is a sensational value - a big 6" (152mm) and fast f/6.5 refractor that's priced...
View full detailsOriginal price $979.99 - Original price $979.99Original price$979.99$979.99 - $979.99Current price $979.99 -
Original price $749.99 - Original price $749.99Original price$749.99$749.99 - $749.99Current price $749.99Explore Scientific AR127 5" f/6.5 Achromatic Doublet Refractor Optical Tube
Explore ScientificIn StockThis 5" Explore Scientific achromatic refractor optical tube is a big performer, both inside the solar system and out in the realm of the nebulas a...
View full detailsOriginal price $749.99 - Original price $749.99Original price$749.99$749.99 - $749.99Current price $749.99 -
Original price $599.99 - Original price $599.99Original price$599.99$599.99 - $599.99Current price $599.99Explore Scientific AR102 4" f/6.5 Achromatic Doublet Refractor Optical Tube
Explore ScientificIn StockThis Explore Scientific 4" refractor has: Big 4" aperture fully multicoated achromatic doublet refractor optics Collimatable objective lens cell ...
View full detailsOriginal price $599.99 - Original price $599.99Original price$599.99$599.99 - $599.99Current price $599.99
