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Used Telescopes Buyback

Telescope Brands

22 Items
Baader Planetarium 2" to 2" Inverter Ring

Baader Planetarium 2" Female to 2" Male Inverter - INVERT-2

SKU: BAD-INVERT-2
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 47 mm
$28.00

William Optics M63 (Female) to 2" Push-In Adapter for P-FLAT6AIII - YE-M63F-2IN-PI

SKU: WYO-YE-M63F-2IN-PI
  • Adapter Connector Type - Side A: M63
  • Adapter Connector Type - Side B: 2" Push-In
$42.00
Apertura Self-Centering 80mm Extension Tube - 2"

Apertura Self-Centering 80mm Extension Tube - 2" - A-SCEXT80-2

SKU: APT-A-SCEXT80-2
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 80 mm
  • Requires only a simple twist of the knurled top ring to both securely lock in place and remove your 2" accessory
  • Provides accurate centering with no lateral movement
$32.95
Apertura 50 mm Extension Tube - 2"

Apertura 50 mm Extension Tube - 2" - A-EXT50

SKU: APT-A-EXT50
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 50 mm
  • Construction Material: CNC-machined black anodized aluminum
$24.95
Apertura 80 mm Extension Tube - 2"

Apertura 80 mm Extension Tube - 2" - A-EXT80

SKU: APT-A-EXT80
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 80 mm
  • Construction Material: CNC-machined black anodized aluminum
$24.95
Celestron 1.25" SCT to 2" Adapter

Celestron SCT to 2" Adapter - 93661

SKU: CEL-93661
  • Adapter Connector Type - Side A: SCT
  • Adapter Connector Type - Side B: 2"
  • Construction Material: Black anodized aluminum
$23.95
Pegasus M54 Male to 2" Nosepiece Adapter

Pegasus Astro M54 Male to 2" Nosepiece Adapter - PEG-ADAPT-M54M-2NP

SKU: PGA-PEG-ADAPT-M54M-2NP
  • Adapter Connector Type - Side A: M54
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 1.5 mm
  • Thread: Pitch 0.75 mm/6 mm length
  • Nosepiece Length: 35 mm
$30.38
Apertura 50mm Self-Centering Extension Tube - 2"

Apertura 50mm Self-Centering Extension Tube - 2" - A-SCEXT50-2

SKU: APT-A-SCEXT50-2
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 50 mm
  • Requires only a simple twist of the knurled top ring to both securely lock in place and remove your 2" accessory
  • Provides accurate centering with no lateral movement
$32.95
Apertura 35mm Self-Centering Extension Tube - 2"

Apertura 35mm Self-Centering Extension Tube - 2" - A-SCEXT35-2

SKU: APT-A-SCEXT35-2
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 35 mm
  • Requires only a simple twist of the knurled top ring to both securely lock in place and remove your 2" accessory
  • Provides accurate centering with no lateral movement
$32.95

Apertura 2" Extension Tube - 35 mm Long - A-EXT35

SKU: APT-A-EXT35
  • 2-inch Telescope Extension Tube
  • Length is 35 mm or 1.38"
  • Brass compression ring locks nicely without scratching
$24.95

Orion 2" Extension Tube - 05124

SKU: ORI-05124
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 50.8 mm
$24.99
Baader 2" Eyepiece Clamp with Filter Holder (filter not included)

Baader SC Deluxe 2" Visual Back with Integrated Filter Holder - T2-17F

SKU: BAD-T2-17F
  • Adapter Connector Type - Side A: Small SCT (2")
  • Adapter Connector Type - Side B: 2"
$77.00

Tele Vue 2" Extension Tube - 2" Long - X2C-0008

SKU: TLV-X2C-0008
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 50.8 mm
$65.00

Tele Vue 3.5" Extension Tube - 2" - X3C-0009

SKU: TLV-X3C-0009
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 89 mm
$65.00
Explore Scientific Extension Tube for Rack & Pinion Focuser - 1"

Explore Scientific 1" Extension Tube for Rack & Pinion Focuser - ESRPEXT1

SKU: EXS-ESRPEXT1
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 25.4 mm (1")
$29.99
Explore Scientific Extension Tube for Rack & Pinion Focuser - 2"

Explore Scientific 2" Extension Tube for Rack & Pinion Focuser - ESRPEXT2

SKU: EXS-ESRPEXT2
  • Adapter Connector Type - Side A: 2" threaded
  • Adapter Connector Type - Side B: 2" threaded
  • Length: 50.8 mm (2")
$34.99

Howie Glatter 2" T-Adapter with Parallizer - EA20-205T

SKU: SLI-EA20-205T
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: 2"
$75.00

Optec Pentax Camera Mounting Plate for 2" NextGEN Telecompressors - 17395

SKU: OPT-17395
  • Adapter Connector Type - Side A: Pentax (M42x1)
  • Adapter Connector Type - Side B: 2"
$60.00

Optec 2.156" x 24tpi Camera Mounting Plate for 2" NextGEN Telecompressors - 17398

SKU: OPT-17398
  • Adapter Connector Type - Side A: SBIG (2.156")
  • Adapter Connector Type - Side B: 2"
$60.00

Optec C-Mount Camera Mounting Plate for 2" NextGEN Telecompressors - 17399

SKU: OPT-17399
  • Adapter Connector Type - Side A: C or CS
  • Adapter Connector Type - Side B: 2"
$60.00
Baader Planetarium M68 to 2" UNFI Conversion Ring

Baader Planetarium M68 to 2" UNFI Conversion Ring - M68-2

SKU: BAD-M68-2
  • Adapter Connector Type - Side A: M68
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 5 mm
$64.00

Takahashi 67F Coupling for 67 Flattener - TKA31585

SKU: TAK-TKA31585
  • Adapter Connector Type - Side A: M92
  • Adapter Connector Type - Side B: 2"
  • Adapter or Spacer Length in mm: 14 mm
$75.00

High Point Scientific carries the most popular telescope brands among astronomy enthusiasts, including Celestron, Baader Planetarium, Orion, and many more. We also design our own astronomy products under the High Point brand, to give you the best selection of products at the price you’re looking for.

We work directly with manufacturers to give you a wide selection of products from many other brands like Meade, TeleVue, Explore Scientific, Coronado, and iOptron. While we have dedicated many hours researching what telescope brands you - our customers - are looking for, we encourage you to explore up and coming brands on our website such as William Optics, Pentax, SkyWatcher, and Stellarvue.

High Point Scientific offers many of the latest brands to choose from for telescope accessories. Just a few of these brands include AstroZap, ADM Accessories, Losmandy, Takahashi, and JMI. It’s important to make sure you have the correct accessories for your aspirations and budget and our experts are here to make sure you find them.

Astro-imaging is a growing industry, not just for photographers, but for astronomy hobbyists as well. With so many quality, affordable products, it’s easy to see why! Brands like QSI, ZWO, and QHY have designed some of the best astrophotography cameras in the industry, and we have them right here at High Point!