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Refractor Optical Tube Assemblies

Items 1 - 25 of 105
Stellarvue SV80ST APO Triplet Imaging Refractor Telescope System

Stellarvue SV80ST 80 mm f/6 Imaging Refractor Telescope System - SV080ST-25FT-IS

SKU: STV-SV080ST-25FT-IS
  • 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
$2,114.00
 

William Optics WhiteCat 51 APO f/4.9 Refracting Telescope - Limited Edition - L-RC51W

SKU: WYO-L-RC51W
  • Optical Design: Refractor
  • Telescope Aperture: 51mm (2")
  • Focal Ratio: f/4.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$698.00
 

William Optics Redcat 51 Refractor Telescope - A-RC51-RD - Used

SKU: UEQ-11553-WYO-A-RC51-RD
  • Optical Design: Refractor
  • Telescope Aperture: 51mm (2")
  • Focal Ratio: f/4.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$698.00 $549.00
 
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
 

Celestron Advanced Series C6-R Refractor OTA - 21019-OTA - Used

SKU: UEQ-11682-CEL-21019-OTA
  • Optical Design: Refractor
  • Telescope Aperture: 152.4mm (6")
  • Focal Ratio: f/8
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$699.95 $563.00
 
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
Available Used from $549.00
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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
 
Tele Vue TV60 Refractor Telescope

Tele Vue TV-60 Optical Tube Assembly - TVO-2460

SKU: TLV-TVO-2460
  • Optical Design: Refractor
  • Telescope Aperture: 60mm (2.36")
  • Focal Ratio: f/6
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$825.00
 
Tele Vue TV76 Refractor in Ivory with Case

Tele Vue 76 mm APO Refractor Telescope - Ivory - WXO-3065

SKU: TLV-WXO-3065
  • Optical Design: Refractor
  • Telescope Aperture: 76mm (3")
  • Focal Ratio: f/6.3
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$1,695.00
 
Tele Vue TV85 Refractor in Ivory with Case

Tele Vue 85 mm APO Refractor Telescope - Ivory - WXO-3372

SKU: TLV-WXO-3372
  • Optical Design: Refractor
  • Telescope Aperture: 85mm (3.35")
  • Focal Ratio: f/7
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$2,125.00
 

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 $1,499.00
 

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 $2,299.00
 

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 $5,999.00
 

Orion 80 mm ED F/6 CF Triplet APO Refractor OTA - 09534

SKU: ORI-09534
  • 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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$949.99
 

Orion 80 mm ED APO Refractor Optical Tube Assembly - 09895

SKU: ORI-09895
  • Optical Design: Refractor
  • Telescope Aperture: 80mm (3.15")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$449.99
 

Sky-Watcher Evostar ProED 80 mm f/7.5 ED APO OTA with Aluminum Case - S11100

SKU: SKY-S11100
  • Optical Design: Refractor
  • Telescope Aperture: 80mm (3.15")
  • Focal Ratio: f/7.5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$825.00
 

Sky-Watcher Evostar PRO 100 mm f/9 ED APO OTA with Aluminum Case - S11120

SKU: SKY-S11120
  • Optical Design: Refractor
  • Telescope Aperture: 100mm (3.94")
  • Focal Ratio: f/9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$945.00
 

Sky Watcher Evostar PRO 120 ED APO OTA with Aluminum Carry Case - S11130

SKU: SKY-S11130
  • 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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$1,925.00
 
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
 
Takahashi FSQ-85ED - Collapsed Length

Takahashi FSQ-85EDX Refractor Telescope - No Flattener - TQE08510

SKU: TAK-TQE08510
  • Optical Design: Refractor
  • Telescope Aperture: 85mm (3.35")
  • Focal Ratio: f/5.3
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
$3,585.00
 
Takahashi FSQ-106EDX4 Quadruplet Astrograph OTA

Takahashi FSQ-106EDX4 Quadruplet Refractor Astrograph OTA - TQE10630

SKU: TAK-TQE10630
  • Optical Design: Refractor
  • Telescope Aperture: 106mm (4.17")
  • Focal Ratio: f/5
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$6,040.00
 
Takahashi TOA-150 Refractor OTA

Takahashi TOA-150B - 6" f/7.3 Double ED APO Triplet Refractor with 4" Focuser - TOK15110

SKU: TAK-TOK15110
  • Optical Design: Refractor
  • Telescope Aperture: 150mm (5.9")
  • Focal Ratio: f/7.3
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Electronics: OTA Only - No Electronics
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$12,970.00
 
Takahashi TSA-120 APO Triplet Refractor OTA

Takahashi TSA-120 - 120 mm f/7.5 APO Triplet Refractor Telescope - TTK12010

SKU: TAK-TTK12010
  • 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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$4,430.00