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Refractor Optical Tube Assemblies

Items 1 - 25 of 122
Explore Scientific 127 mm Essential ED APO Triplet Refractor

Explore Scientific 127mm ED Essential Refractor with Accessories - ES-ED127075-03 - Silver Grade Refurb

SKU: EXS-ES-ED127075-03-SG
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,899.99 $1,249.95

Explore Scientific 127 mm f/7.5 FCD100 Triplet Refractor with 2.5" HEX Focuser - FCD100-127075-01 - Silver Grade Refurb

SKU: EXS-FCD100-127075-01-SG
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,399.99 $1,699.99
Meade 130 mm f/7 Series 6000 ED APO Triplet Refractor Telescope

Meade 130 mm f/7 Series 6000 ED APO Triplet Refractor - 261003 - NEAF Demo

SKU: CNP-MEA-261003
  • Optical Design: Refractor
  • Telescope Aperture: 130mm (5.12")
  • Focal Ratio: f/7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,899.00 $2,299.95

Explore Scientific 102 mm ED Essential Series Refractor with Accessories - ES-ED10207-01 - NEAF Demo

SKU: CNP-EXS-ES-ED10207-01
  • Optical Design: Refractor
  • Telescope Aperture: 102mm (4.02")
  • Focal Ratio: f/7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,029.99 $896.00
Explore Scientific 127 mm Essential ED APO Triplet Refractor

Explore Scientific 127mm ED Essential Refractor with Accessories - ES-ED127075-03 - NEAF Demo

SKU: CNP-EXS-ES-ED127075-03
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,699.99 $1,349.00

Explore Scientific 127 mm f/7.5 FCD100 Triplet Refractor with 2.5" HEX Focuser - FCD100-127075-01 - NEAF Demo

SKU: CNP-EXS-FCD100-127075-01
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,199.99 $1,800.00

Explore Scientific 127 mm f/7.5 FCD100 Triplet Carbon Fiber Refractor with 2.5" HEX Focuser - FCD100-127075-CF - NEAF Demo

SKU: CNP-EXS-FCD100-127075-CF
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,699.99 $2,250.00
Explore Scientific AR102 Air Spaced Doublet Refractor OTA

Explore Scientific 102 mm Air Spaced Doublet Refractor Telescope OTA - DAR102065-01 - NEAF Demo

SKU: CNP-EXS-DAR102065-01
  • Optical Design: Refractor
  • Telescope Aperture: 102mm (4.02")
  • Focal Ratio: f/6.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$499.99 $397.00
Explore Scientific AR152 Refractor OTA

Explore Scientific 152 mm Achromatic Refractor OTA and Accessories - DAR152065-01 - NEAF Demo

SKU: CNP-EXS-DAR152065-01
  • Optical Design: Refractor
  • Telescope Aperture: 152mm (5.98")
  • Focal Ratio: f/6.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$869.99 $690.00

Explore Scientific 152 mm Carbon Fiber Triplet ED Refractor - TED15208CF-HEXDD3 - NEAF Demo

SKU: CNP-EXS-TED15208CF-HEXDD3
  • Optical Design: Refractor
  • Telescope Aperture: 152mm (5.98")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$6,999.00 $3,495.00

Explore Scientific 152 mm Carbon Fiber Triplet ED Refractor with Hexagonal 3" Focuser & 3" Diagonal - TED15208CF-HEXDD3

SKU: EXS-TED15208CF-HEXDD3
  • Optical Design: Refractor
  • Telescope Aperture: 152mm (5.98")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$5,499.99 $3,795.00
Takahashi FC-100DF Fluorite APO Doublet Refractor Telescope OTA

Takahashi 100 mm Fluorite APO Refractor Telescope OTA - TFK10110

SKU: TAK-TFK10110
  • Optical Design: Refractor
  • Telescope Aperture: 100mm (3.94")
  • Focal Ratio: f/7.4
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,440.00 $2,196.00

Takahashi TSA 120 mm APO Triplet Refractor OTA w/ 3" FeatherTouch Focuser - TTK12010-FT

SKU: TAK-TTK12010-FT
  • Optical Design: Refractor
  • Telescope Aperture: 120mm (4.72")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$4,850.00

Apertura 60mm FPL-53 Doublet Refractor & 2" Field Flattener - 60EDR-KIT - NEAF Demo

SKU: CNP-APT-60EDR-KIT
  • Optical Design: Refractor
  • Telescope Aperture: 60mm (2.36")
  • Focal Ratio: f/6
  • Telescope Mount Type: No Mount - OTA Only
  • Flattener Compatibility: Apertura 60/72
  • Flattener Camera Threads: 48mm "wide" T-Rings for DSLRs
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$499.95 $418.00

William Optics Zenithstar 81 APO Refractor Package w/ UniGuide and Flattener - A-Z81GD-SP

SKU: WYO-A-Z81GD-SP
  • Optical Design: Refractor
  • Telescope Aperture: 81mm (3.19")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$999.00
Stellarvue SVX140T Hand-Figured Apochromatic Refractor Telescope OTA

Stellarvue Premier 140 mm f/6.7 Hand-Figured APO Triplet Refractor with 3.5" SV Focuser - SVX140T-35SV

SKU: STV-SVX140T-35SV
  • Optical Design: Refractor
  • Telescope Aperture: 140mm (5.51")
  • Focal Ratio: f/6.7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$5,995.00
Stellarvue SVX140T Hand-Figured Apochromatic Refractor Telescope OTA

Stellarvue Premier 140 mm f/6.7 Hand-Figured APO Triplet Refractor with 3.5" Feather Touch Focuser - SVX140T-35FT

SKU: STV-SVX140T-35FT
  • Optical Design: Refractor
  • Telescope Aperture: 140mm (5.51")
  • Focal Ratio: f/6.7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$6,495.00
Apertura 60EDR and 2" Field Flattener Kit

Apertura 60mm FPL-53 Doublet Refractor & 2" Field Flattener - 60EDR-KIT

SKU: APT-60EDR-KIT
  • Optical Design: Refractor
  • Telescope Aperture: 60mm (2.36")
  • Focal Ratio: f/6
  • Telescope Mount Type: No Mount - OTA Only
  • Flattener Compatibility: Apertura 60/72
  • Flattener Camera Threads: 48mm "wide" T-Rings for DSLRs
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$499.95
Stellarvue SVX140T Hand-Figured Apochromatic Refractor Telescope OTA

Stellarvue Premier 140 mm f/6.7 Hand-Figured APO Triplet Refractor with 3.5" Moonlight Night Crawler Focuser - SVX140T-WR35

SKU: STV-SVX140T-WR35
  • Optical Design: Refractor
  • Telescope Aperture: 140mm (5.51")
  • Focal Ratio: f/6.7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$8,699.00

William Optics Gran Turismo 81 Triplet APO Refractor w/ Dual Dovetail - Gold - A-F81GTIIIGD

SKU: WYO-A-F81GTIII-GD
  • Optical Design: Refractor
  • Telescope Aperture: 81mm (3.19")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,398.00

William Optics Gran Turismo 81 Triplet APO Refractor w/ Dual Dovetail - Red - A-F81GTIIIRD

SKU: WYO-A-F81GTIII-RD
  • Optical Design: Refractor
  • Telescope Aperture: 81mm (3.19")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,398.00

William Optics 73mm f/5.9 ZenithStar FPL53 Doublet APO Refractor w/ Dual Dovetail Plate - Gold - A-Z73IIGD

SKU: WYO-A-Z73II-GD
  • Optical Design: Refractor
  • Telescope Aperture: 73mm (2.9")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$648.00

William Optics 73mm f/5.9 ZenithStar FPL53 Doublet APO Refractor w/ Dual Dovetail Plate - Red - A-Z73IIRD

SKU: WYO-A-Z73II-RD
  • Optical Design: Refractor
  • Telescope Aperture: 73mm (2.9")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$648.00

William Optics ZenithStar 81 APO Doublet Refractor - Red - A-Z81RD

SKU: WYO-A-Z81-RD
  • Optical Design: Refractor
  • Telescope Aperture: 81mm (3.19")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$798.00

William Optics ZenithStar 81 APO Doublet Refractor - Gold - A-Z81GD

SKU: WYO-A-Z81-GD
  • Optical Design: Refractor
  • Telescope Aperture: 81mm (3.19")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$798.00