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Used Telescopes Buyback

Refractor Telescope Optical Tube Assemblies

Items 1 - 25 of 84
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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$438.00
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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$438.00
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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$438.00
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 with 3 inch 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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$4,910.00

William Optics ZenithStar 61mm APO Refractor - Gold - A-Z61IIGD

SKU: WYO-A-Z61IIGD
  • 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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$592.00

William Optics ZenithStar 61mm APO Refractor with Cat Handle Bar - Red - A-Z61IIRD

SKU: WYO-A-Z61IIRD
  • 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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$592.00

William Optics ZenithStar 61mm APO Refractor with Cat Handle Bar - Space Gray - A-Z61IITG

SKU: WYO-A-Z61IITG
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  • 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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$592.00

William Optics Gran Turismo 81 APO Refractor with 2.5” Rack and Pinion Focuser - Space Gray - A-F81GTIVTG

SKU: WYO-A-F81GTIVTG
  • 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
Available Used from $1,450.00
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$1,538.00

William Optics Gran Turismo 81 APO Refractor with 2.5” Rack and Pinion Focuser - Red - A-F81GTIVRD

SKU: WYO-A-F81GTIVRD
  • 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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$1,538.00

William Optics Gran Turismo 81 APO Refractor with 2.5” Rack and Pinion Focuser - Gold - A-F81GTIVGD

SKU: WYO-A-F81GTIVGD
  • 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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$1,538.00
Orion 130 mm EON Apochromatic Triplet Refractor Telescope OTA

Orion EON 130mm ED Triplet Apochromatic Refractor - 10286

SKU: ORI-10286
  • 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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$2,599.99
 Zenithstar 81 gold refractor with 0.8x reducer and flattener

William Optics Zenithstar 81 APO Refractor Package with 0.8x Reducer & Flattener - Gold - A-Z81GD-AP

SKU: WYO-A-Z81GD-AP
  • 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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$1,010.00
Zenithstar 81 Red refractor with grey 0.8x reducer/flattener

William Optics Zenithstar 81 APO Refractor Package with 0.8x Reducer & Flattener - Red - A-Z81RD-AP

SKU: WYO-A-Z81RD-AP
  • 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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$1,010.00
Apertura 72 mm Doublet APO Refractor with Matching Field Flattener

Apertura 72 mm Doublet APO Refractor with Adjustable Flattener - 72EDR-KIT

SKU: APT-72EDR-KIT
  • Optical Design: Refractor
  • Telescope Aperture: 72mm (2.8")
  • Focal Ratio: f/6
  • Telescope Mount Type: No Mount - OTA Only
  • Flattener Camera Side: M48
  • Flattener Telescope Side: M54 with 2" Filter Threads
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$749.95

William Optics 73mm f/5.9 ZenithStar FPL53 Doublet APO Refractor w/ Dual Dovetail Plate - Red - A-Z73IIIRD

SKU: WYO-A-Z73IIIRD
  • 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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$713.00

William Optics 73mm f/5.9 ZenithStar FPL53 Doublet APO Refractor w/ Dual Dovetail Plate - Gold - A-Z73IIIGD

SKU: WYO-A-Z73IIIGD
  • 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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$713.00
Apertura 60EDR 60 millimeter FPL-53 doublet refractor with 2-inch field flattener kit.

Apertura 60mm FPL-53 Doublet Refractor and 2 inch 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 Camera Side: M48
  • Flattener Telescope Side: M54 with 2" Filter Threads
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$599.95

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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$878.00

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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$878.00
iOptron R80 Refractor Telescope

iOptron 80 mm Refractor OTA - 8710

SKU: IOP-8710
  • 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
$129.00
William Optics 91 mm FLT Apochromatic Triplet Refractor with FPL53 Lens - Red Version

William Optics Fluorostar 91 FPL53 Triplet APO Refractor with 3.3" Rack & Pinion Focuser - Red - T-FLT-91RD-RP33

SKU: WYO-T-FLT-91RD-RP33
  • Optical Design: Refractor
  • Telescope Aperture: 91mm (3.58")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Telescope Electronics: OTA Only - No Electronics
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$1,998.00
William Optics 91 mm FLT Apochromatic Triplet Refractor with FPL53 Lens - Space Grey Version

William Optics Fluorostar 91 FPL53 Triplet APO Refractor with 3.3" Rack & Pinion Focuser - Space Grey - T-FLT-91SG-RP33

SKU: WYO-T-FLT-91SG-RP33
  • Optical Design: Refractor
  • Telescope Aperture: 91mm (3.58")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Telescope Electronics: OTA Only - No Electronics
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$1,998.00
William Optics 91 mm FLT Apochromatic Triplet Refractor with FPL53 Lens - Gold Version

William Optics Fluorostar 91 FPL53 Triplet APO Refractor with 3.3" Rack & Pinion Focuser - Gold - T-FLT-91GD-RP33

SKU: WYO-T-FLT-91GD-RP33
  • Optical Design: Refractor
  • Telescope Aperture: 91mm (3.58")
  • Focal Ratio: f/5.9
  • Telescope Mount Type: No Mount - OTA Only
  • Type of Telescope Electronics: OTA Only - No Electronics
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$1,998.00
Explore Scientific 127 mm FCD100 Triplet Refractor Carbon Fiber Telescope

Explore Scientific 127 mm f/7.5 FCD100 Triplet Carbon Fiber Refractor with 2.5 inch HEX Focuser - FCD100-127075-CF - Used

SKU: UEQ-210929-7B
  • 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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$3,379.99 $3,125.00

If you want many of the benefits of the refractor design without having to clear out your savings account, you may wish to check out the Explore Scientific 127 mm Achromatic Refractor. With excellent optics for such a short focus achromatic doublet, this telescope excels at low to mid power deep sky viewing. Under dark skies, star clusters will show their incredible beauty with pinpoint star images. Large nebulae like M8 “The Lagoon”, and M42 in Orion will show beautiful structure and clarity, making it hard to pull your eyes away from the eyepiece!

If you are looking for a super quality imaging refractor that can be handled with a mid-sized equatorial mount, you may wish to check out Sky-Watcher’s Esprit 100 mm ED APO Triplet. This fine telescope has what it takes to perform like a much more costly OTA. With a three element FPL-53 ED lens and a thread on field flattener designed specifically for this telescope, pinpoint clarity is yours from edge to edge when using your favorite camera.

Aperture for aperture, the unobstructed design of a refractor can often provide better contrast than most obstructed designs like Newtonians and Cassegrains. Also, since lens coatings generally scatter less light than mirror coatings, the background sky is noticeably darker. On top of that, most refractors are extremely well baffled against stray light, therefore your target of interest appears to jump out with clarity and brightness far surpassing what is normally expected with their often modest apertures. All this and much more is yours with a quality refractor from High Point Scientific!