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Refractor Optical Tube Assemblies

Items 1 - 25 of 111
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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$1,198.00

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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$1,198.00

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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$618.00

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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$618.00

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
William Optics Zenithstar 103 Imaging APO Refractor with Bahtinov Mask Cover - Red

William Optics Zenithstar 103 Imaging APO Refractor with Saddle Handle Bar - Red - A-Z103IIRD

SKU: WYO-A-Z103II-RD
  • Optical Design: Refractor
  • Telescope Aperture: 103mm (4.06")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,198.00
William Optics Zenithstar 103 Imaging APO Refractor with Bahtinov Mask Cover

William Optics Zenithstar 103 Imaging APO Refractor with Saddle Handle Bar- Blue - A-Z103IIBU

SKU: WYO-A-Z103II-BU
  • Optical Design: Refractor
  • Telescope Aperture: 103mm (4.06")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,198.00
William Optics Zenithstar 103 Imaging APO Refractor with Bahtinov Mask Cover - Gold

William Optics Zenithstar 103 Imaging APO Refractor with Saddle Handle Bar - Gold - A-Z103IIGD

SKU: WYO-A-Z103II-GD
  • Optical Design: Refractor
  • Telescope Aperture: 103mm (4.06")
  • Focal Ratio: f/6.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,198.00
William Optics Guide Star 61 Apochromatic Refractor OTA in Blue

William Optics Guide Star 61 APO Refractor Telescope - Blue - M-GS61-BU

SKU: WYO-M-GS61-BU
  • Optical Design: Refractor
  • Telescope Aperture: 61mm (2.4")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$398.00
William Optics Guide Star 61 Apochromatic Refractor OTA in Red

William Optics Guide Star 61 APO Refractor Telescope - Red - M-GS61-RD

SKU: WYO-M-GS61-RD
  • Optical Design: Refractor
  • Telescope Aperture: 61mm (2.4")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$398.00
William Optics Guide Star 61 Apochromatic Refractor OTA in Gold

William Optics Guide Star 61 APO Refractor Telescope - Gold - M-GS61-GD

SKU: WYO-M-GS61-GD
  • Optical Design: Refractor
  • Telescope Aperture: 61mm (2.4")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$398.00
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

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
Explore Scientific AR102 Air Spaced Doublet Refractor OTA

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

SKU: 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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$549.99
Explore Scientific 127 mm Refractor OTA

Explore Scientific 127 mm Achromatic Refractor OTA with Accessories - DAR127065-01

SKU: EXS-DAR127065-01
  • Optical Design: Refractor
  • Telescope Aperture: 127mm (5")
  • Focal Ratio: f/6.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$699.99

Explore Scientific Essential ED80 Triplet APO Refractor - ES-ED0806-01

SKU: EXS-ES-ED0806-01
  • Optical Design: Refractor
  • Telescope Aperture: 80mm (3.15")
  • Focal Ratio: f/6
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$849.99

Sky-Watcher Esprit 80 mm ED APO Triplet Refractor - S11400

SKU: SKY-S11400
  • Optical Design: Refractor
  • Telescope Aperture: 80mm (3.15")
  • Focal Ratio: f/5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,649.00

Sky-Watcher Esprit 100 mm ED APO Triplet Refractor - S11410

SKU: SKY-S11410
  • Optical Design: Refractor
  • Telescope Aperture: 100mm (3.94")
  • Focal Ratio: f/5.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,499.00

Sky-Watcher Esprit 150 mm ED APO Triplet Refractor - S11430

SKU: SKY-S11430
  • Optical Design: Refractor
  • Telescope Aperture: 150mm (5.9")
  • Focal Ratio: f/7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$6,399.00
Takahashi CCA-250 Astrograph on Optional Mount

Takahashi CCA 250 mm Tri-Focal Astrograph Telescope OTA - TCK25010

SKU: TAK-TCK25010
  • Optical Design: Modified Cassegrain
  • Telescope Aperture: 250mm (9.84")
  • Focal Ratio: f/5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
$15,000.00