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Adapters, Spacers & Extensions for Telescopes

Items 51 - 75 of 315

ZWO T2 to CS Adapter - T2-CS

SKU: ZWO-T2-CS
  • Adapter Connector Type - Side A: C or CS
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 7 mm
$12.00

High Point 10mm Spacer Ring for M42 Thread - M4210

SKU: HPS-M4210
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 10 mm
$15.95
Baader Planetarium TAK Mewlon M71/M72 Adapter

Baader Planetarium M71/M72 Takahashi Mewlon Aux Adapter - TAK-M71

SKU: BAD-TAK-M71
  • Adapter Connector Type - Side A: M71
  • Adapter Connector Type - Side B: M72
  • Adapter or Spacer Length in mm: 13.5 mm
$54.00
Baader Wide T-Ring for Sony E/NEX Bayonet with D52i/M48 to T-2 and S52

Baader Wide T-Ring Set for Sony E/NEX Cameras - TRING-S

SKU: BAD-TRING-S
  • Side A Connection: Sony E/NEX Bayonet
  • Side B Connection: S52, M42, M48
  • Optical Length: 8.3 mm
$39.00
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")
$29.99
Celestron Adapter - Canon Mirrorless Camera to 8" RASA Astrograph

Celestron Canon Mirrorless Camera to 8" RASA Adapter - 93406

SKU: CEL-93406
  • Connection Side A: Canon Mirrorless
  • Connection Side B: 8" RASA
  • Produces proper back focus for RASA
  • Black anodized aluminum
$43.95
William Optics 48mm (Female) to 42mm (Male) Thread Adapter

William Optics 48mm (Female) to 42mm (Male) Thread Adapter - YE-M48-42

SKU: WYO-YE-M48-42
  • Adapter Connector Type - Side A: Wide T or T2 (M48)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 7.2 mm
$10.00
Hotech 1.25" SCA T-Adapter - SCA-TA125

Hotech 1.25" SCA T-Adapter - SCA-TA125

SKU: HTC-SCA-TA125
  • Adapter Connector Type - Side A: 1.25"
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 18 mm
$45.00 $36.00

ZWO EOS-T2 Lens Adapter for ASI Cameras - EOS-T2-II

SKU: ZWO-EOS-T2-II
  • Connection Side A - Canon EF Lens
  • Connection Side B: M42 threads
  • Comes with 5 mm extender
  • Can be used with cameras that have either 17.5 mm or 12.5 mm back focus
$59.00

ZWO EFW-EOS Adapter for EFW and ASI1600 - EFW-EOS-II

SKU: ZWO-EFW-EOS-II
  • Adapter Connector Type - Side A: EOS
  • Adapter Connector Type - Side B: ZWO EFW
  • Extends the distance to 17.5 mm
Available Used from $39.00
$49.00
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
$19.95
Celestron 2" to 1.25" Twist-Lock Eyepiece Adapter

Celestron 2" to 1.25" Adapter with Twist-Lock - 93668

SKU: CEL-93668
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: 1.25"
  • Adapter Construction Material: Black anodized aluminum
  • Twist-Lock Construction Material: Orange anodized aluminum
$37.95

Starizona 11" RASA Filter Slider Adapter for ZWO Cooled Cameras - FS-RASA11

SKU: STZ-FS-RASA11
  • Adapter Connector Type - Side A: RASA
  • Adapter Connector Type - Side B: Starizona Cooled Cameras (M42)
$40.00
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 30 mm Spacer Ring for M48 Thread

Apertura 30 mm Spacer Ring for M48 Thread - A-M4830

SKU: APT-A-M4830
  • Adapter Connector Type - Side A: Wide T or T2 (M48)
  • Adapter Connector Type - Side B: Wide T or T2 (48mm)
  • Adapter or Spacer Length in mm: 30 mm
  • Construction material consists of CNC-machined black anodized aluminum
$15.95

ZWO 21 mm M54 Male Thread to M48 Female Thread Extension - M54-M48-21

SKU: ZWO-M54-M48-21
  • Adapter Connector Type - Side A: M54
  • Adapter Connector Type - Side B: M48
  • Adapter or Spacer Length in mm: 21 mm
  • Construction Material: Black anodized aluminum
$25.00
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

ZWO M68 Sensor Tilt Adapter for 6200MC/MM Pro Cameras - M68-PLATE

SKU: ZWO-M68-PLATE
  • Adapter Connector Type - Side A: M68
  • Adapter Connector Type - Side B: M68
  • Optical Length: 5 mm
$29.00

ZWO M48 Male to M48 Female Extender - 16.5 mm - T2-M48-16.5

SKU: ZWO-T2-M48-16.5
  • Adapter Connector Type - Side A: Wide T or T2 (M48)
  • Adapter Connector Type - Side B: Wide T or T2 (M48)
  • Adapter or Spacer Length: 16.5 mm
  • Construction Material: Black anodized aluminum
$18.00

QSI C-Mount Adapter - Type 1 - QSI0152

SKU: QSI-QSI0152
  • Adapter Connector Type - Side A: C (25.4 mm)
  • Adapter Connector Type - Side B: QSI Bolt On Faceplate
$79.95

QSI OAG T-Mount Adapter - QSI0155

SKU: QSI-QSI0155
  • Adapter Connector Type - Side A: T (M42)
  • Adapter Connector Type - Side B: Flange
$69.95

QSI OAG 1.25" (STi) Adapter - QSI0166

SKU: QSI-QSI0166
  • Adapter Connector Type - Side A: STi (28.5 mm)
  • Adapter Connector Type - Side B: Flange
$69.95

QSI 5mm Spacer for 5-position WSG Cover - QSI0188

SKU: QSI-QSI0188
  • Spacer Length in mm: 5 mm
  • Compatibility Side A: QSI 500/600 Cameras
  • Compatibility Side B: WSG Cover
  • Included: Set of Long Screws
$219.95

QSI 5mm Spacer for 8-position WSG Cover - QSI0189

SKU: QSI-QSI0189
  • Spacer Length in mm: 5 mm
  • Compatibility Side A: QSI 500/600 Cameras
  • Compatibility Side B: WSG Cover
  • Included: Set of Long Screws
$204.00

Apertura 25mm Extension Tube for GSO 6" & 8" RC - A-RC825

SKU: APT-A-RC825
  • Adapter Connector Type - Side A: M90
  • Adapter Connector Type - Side B: M90
  • Adapter or Spacer Length in mm: 25 mm
  • Construction Material: CNC-machined black anodized aluminum
  • Specifically designed for 6" and 8" RC Astrographs from GSO
$24.95

Camera adapters are a simple, yet crucial component to achieve optimal astro-imaging results. They safely connect an SLR camera to your telescope and can help you achieve the correct back focus for your imaging system. These adapters can range from T-rings, T-adapters, SLR camera adapters, or even adapters capable of mounting your smartphone’s camera to a telescope. These are just a few types of accessories that fall under the camera adapter category.


There are two different options to image using an SLR camera. The first method is called prime-focus imaging. In prime-focus astrophotography, a camera is attached directly to a telescope using a T-ring and T-adapter. That way, the telescope is the lens you use to capture images. While this method is perfect for imaging the Moon and close planets, prime-focus imaging is not recommended for deep-space objects unless you have a telescope with a long focal length. Otherwise, celestial objects may appear small.


The solution is eyepiece projection which attaches your camera to the back of an entire visual observation system. With eyepiece projection, you get the magnification benefits of an eyepiece so your subject will appear larger and in greater detail. This can be tricky, however, because the set up is so heavy it can cause shake and vibration every time you touch the imaging system. While a lot of information is easily available about how best to image using eyepiece projection, this can be a daunting process for beginners. Please reach out to our imaging experts with any questions.


Arguably the easiest method to capture images of the night sky is by using your smartphone. We have a wide selection of smartphone adapters that can help you capture quick and easy photos that you can share with friends and family. These adapters hold your phone in place behind an eyepiece so that you can capture images and videos without any shaking or vibrations. Most adapters are compatible with today’s most popular smartphones from Apple, Samsung, Google, and many others.

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