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Adapters, Spacers & Extensions for Telescopes

18 Items

Celestron M42 T-Ring for Canon EOS Cameras - 93419

SKU: CEL-93419
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: M42 threads
$11.95

Meade M42 T-Ring for Canon EOS Cameras - 07384

SKU: MEA-07384
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: 42 mm threads
$15.95
Baader Canon EOS C-Mount Camera Adapter - M25

Baader M25 C-Mount Adapter for Canon EOS Cameras - C-EOS

SKU: BAD-C-EOS
  • Camera Compatibility: Canon EOS
  • Threads: C-Mount
  • Optical Length: 26 mm
  • Compatible with Celestron Skyris, Mallincam, and GStar, as well as any other video camera that accepts C-Mount threaded accessories
$96.00
Baader DSLR T-Ring System for Canon EOS Cameras

Baader EOS DSLR M48/M42 T-Ring System - No Filter Included - DSLRT

SKU: BAD-DSLRT
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: M48 threads, M42 threads, 2" Nosepiece
  • Accepts 2" threaded filters or 50.4 mm unmounted filters, sold separately
  • Back Focus: 11 mm
$89.00
Baader Protective Wide T-Ring Adapter with UV/IR Blocking Filter

Baader EOS Protective Wide 42/48 mm T-Ring System with 50.4 mm UV/IR Blocking Filter - DSLRT-UVIR

SKU: BAD-DSLRT-UVIR
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: M42 threads, M48 threads, 2" Nosepiece
  • Includes one (1) 50.4 mm UV-IR Blocking Filter
  • Back Focus: 11 mm
Free shipping Free shipping
$217.00
Baader Protective Wide T-Ring Adapter with UHC-S Nebula Filter

Baader Protective 48/42 mm T-Ring System with UHC Filter for Canon EOS DSLR Cameras - DSLRT-UHC

SKU: BAD-DSLRT-UHC
  • Side A Connection: Canon EOS
  • Side B Connection: M48 thread , M42 thread, 2" Nosepiece
  • Includes one (1) UHC-S 50.4 mm Nebula Filter
Free shipping Free shipping
$229.00
Baader Protective Wide T-Ring Adapter with 7 nm H-Alpha Filter

Baader EOS Protective Wide T-Ring System with 50.4 mm H-Alpha 7 nm Filter - DSLRT-HA

SKU: BAD-DSLRT-HA
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: 48 mm threads, 42 mm threads, 2" Nosepiece
  • Includes one (1) 7nm H-Alpha 50.4 mm Filter
  • Back Focus: 12 mm
Free shipping Free shipping
$357.00

Sky-Watcher M48 T-Ring for Canon EOS Cameras - S20300

SKU: SKY-S20300
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: M48 threads
  • Great for connecting a Canon camera to Sky-Watcher 0.85x Focal Reducers mounted on Esprit or ProED telescopes
$25.00
Stellarvue 48 mm T Ring

Stellarvue M48 T-Ring for Canon EOS Cameras - CATCANON48

SKU: STV-CATCANON48
  • Side A Connection: M48 Wide T Mount
  • Side B Connection: Canon EOS bayonet
  • Minimizes vignetting with wider clear aperture than standard T-rings
  • Recommended for Stellarvue 48 mm field flatteners
$34.95
TLV-CWT-2070 Canon T-Adapter

Tele Vue M48 T-Adapter for Canon Cameras - 2.4" - CWT-2070

SKU: TLV-CWT-2070
  • Connection Side A: Canon EOS Bayonet
  • Connection Side B: M48
$54.95

William Optics M48 Canon EOS T-Mount - Black - TM-CN-EOS-M48

SKU: WYO-TM-CN-EOS-M48
  • Connection Side A: Canon EOS bayonet
  • Connection Side B: M48 T threads
  • Construction Material: CNC-machined Aluminum
  • Color: Black
$29.00

Apertura M48 Canon EOS T-Ring - A-EOS48

SKU: APT-A-EOS48
  • Connection Side A: Canon EOS bayonet
  • Connection Side B: M48 Wide T Threads
  • For full frame Canon EOS cameras
  • Allows your camera and telescope to be directly attached for through-the-lens astrophotography
$19.95
Takahashi Canon EOS Wide Mount T-Ring

Takahashi M48 Wide Mount T-Ring for Canon EOS Cameras - TMW0004

SKU: TAK-TMW0004
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: Wide M48 threads
$92.00
Zhumell T-Ring Adapter for Canon EOS Cameras

Zhumell M42 T-Ring for Canon EOS Cameras - ZHUI008-1

SKU: ZHU-ZHUI008-1
  • DSLR, SLR or Mirrorless Adapters by Brand: Canon
  • Threads: Standard 42 mm T-Mount
  • Offers high quality, durable construction
$18.99

Explore Scientific M42 T2 Ring for Canon EOS Cameras - 49-21350

SKU: EXS-49-21350
  • Connection Side A: Canon EOS bayonet
  • Side B Connection: M42 T threads
  • Construction Material: Metal
$27.99

Baader M42 T-Ring for Canon EOS Cameras - TRING-C

SKU: BAD-TRING-C
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: M42 T Thread
  • Optical Length: 11 mm
$29.00
Apertura Canon T-Ring Side View

Apertura M42 T-Ring for Canon EOS Cameras - CANONTR

SKU: APT-CANONTR
  • Side A Connection: Canon EOS bayonet
  • Side B Connection: Standard 42 mm T-Mount
  • High quality construction ensures a secure connection
  • Offers compatibility with a wide variety of imaging accessories
$16.95

William Optics M48 High Precision "Copper" T-Mount for Canon EOS Full Frame Cameras - YE-TR-BR48-C

SKU: WYO-YE-TR-BR48-C
  • Connection Side A: Canon EOS
  • Connection Side B: : 48 mm T Threads
  • Construction Material: Copper
$78.00

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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