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Adapters, Spacers & Extensions for Telescopes

Items 1 - 25 of 320
$95.00
$95.00
2" Male to SCT Male Adapter

Lumicon 2" Male to SCT Male Adapter - LA1060

SKU: LUM-LA1060
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: Small SCT (2")
$30.00

Takahashi FS60C 13.7mm CCD CFW8A/ST Adapter - TCD0023

SKU: TAK-TCD0023
  • Adapter Connector Type - Side A: M42 T-Thread, Male
  • Adapter Connector Type - Side B: 52 mm threads, Female
  • Optical Length: 13.7 mm
$152.00

Takahashi RD-Auxiliary Ring Extender - TKA83205

SKU: TAK-TKA83205
  • Adapter Connector Type - Side A: Female 72 mm
  • Adapter Connector Type - Side B: 72 mm Extension Tube
$86.00

Takahashi Sky90 or FSQ-105 New Q to SBIG ST-Series with CFW10 Adapter - TCD0018L

SKU: TAK-TCD0018L
  • Adapter Connector Type - Side A: 55.9 x .75 mm
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Connects SBIG ST-series camera with CFW10 to Takahashi Sky90 or FSQ-105 New Q
$163.00

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 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 5 mm Spacer Ring for M42 Thread

Apertura 5 mm Spacer Ring for M42 Thread - A-M425

SKU: APT-A-M425
  • Length: 5 mm
  • Threads: Standard 42 mm T-Mount
  • Stackable with other rings for obtaining proper back focus
  • Construction material consists of CNC-machined black anodized aluminum
$12.95
Apertura 30 mm Extension Spacer for M42 Thread

Apertura 30 mm Spacer Ring for M42 Thread - A-M4230

SKU: APT-A-M4230
  • Length: 30 mm
  • Threads: Standard 42 mm T-Mount
  • Stackable with other available rings for obtaining proper back focus
  • Construction material consists of CNC-machined black anodized aluminum
$12.95
Apertura 20 mm Spacer Ring for M42 Thread

Apertura 20 mm Spacer Ring for M42 Thread - A-M4220

SKU: APT-A-M4220
  • Length: 20 mm
  • Threads: Standard 42 mm T-Mount
  • Stackable with other available rings for obtaining proper back focus
  • Construction material consists of CNC-machined black anodized aluminum
$12.95
Apertura 10 mm Spacer Ring for M42 Thread

Apertura 10 mm Spacer Ring for M42 Thread - A-M4210

SKU: APT-A-M4210
  • Length: 10 mm
  • Threads: Standard 42 mm T-Mount
  • Stackable with other available rings for obtaining proper back focus
  • Construction material consists of CNC-machined black anodized aluminum
$12.95

William Optics M48 T-Mount for Pentax K Cameras - Space Gray - YE-TR-M48K-TG

SKU: WYO-YE-TR-M48K-TG
  • Connection Side A: Pentax K bayonet
  • Connection Side B: M48 T threads
  • Construction Material: CNC-machined Aluminum
  • Color: Space Gray
$32.00

Baader Universal Filter Changer (UFC) M72 (Male) Camera Adapter - UFC-M72E

SKU: BAD-UFC-M72E
  • Universal Filter Changer to M72 Male Camera Adapter
  • The optical height of the adapter is 2 mm
  • Baader has designed this adapter out of anodized aluminum
  • Includes eight mounting screws.
$69.00

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
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
$40.00
QHY M42 Female Medium Spacer with 6 Through Holes

QHY M42 Female Medium 6 Through Hole Spacer - 020080

SKU: QHY-020080
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: 6-Through Hole
  • Included with the QHY Medium Off-Axis Guider
  • Supplies 3 mm of back focus
$23.50

QHY M54 Female Center Adjustment Ring with Heater - 020075

SKU: QHY-020075
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: M54
  • Adapter or Spacer Length: 6 mm
$54.95
Apertura 5mm Spacer Ring for M48 Thread

Apertura 5mm Spacer Ring for M48 Thread - M485

SKU: APT-A-M485
  • 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: 5 mm
  • Construction material consists of CNC-machined black anodized aluminum
$15.95
Apertura 10mm Spacer Ring for M48 Thread

Apertura 10mm Spacer Ring for M48 Thread - M4810

SKU: APT-A-M4810
  • 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: 10 mm
  • Construction material consists of CNC-machined black anodized aluminum
$15.95

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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