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Adapters, Spacers & Extensions for Telescopes

Items 26 - 50 of 315
Celestron M42 Spacer Kit

Celestron M42 Spacer Kit - 93618

SKU: CEL-93618
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length: 7.5 mm, 12 mm, 30 mm
  • Construction: Black anodized aluminum
$39.95

Starizona T-Adapter with Filter Holder for EdgeHD 9.25", 11", and 14" SCTs - TA-HD11-F

SKU: STZ-TA-HD11-F
  • Adapter Connector Type - Side A: T (M42)
  • Adapter Connector Type - Side B: Large SCT (3.29")
  • Enables connection between DSLR and EdgeHD 9.25", 11", & 14" SCTs
  • Includes a 48mm (2") filter thread
$79.95

Starlight Instruments 2" Adapter for Orion, Celestron, Sky-Watcher, Vixen, and Synta Telescopes - A20-292

SKU: SLI-A20-292
  • Adapter Connector Type - Side A: 2" Push-In
  • Adapter Connector Type - Side B: 3.804" Receptacle
  • Focuser Compatibility: FTF2025BCR
  • Adapter Length: 4"
$135.00

William Optics 48mm Sony E T-Mount - Black - TM-SN-E-M48

SKU: WYO-TM-SN-E-M48
  • Connection Side A: Sony E
  • Connection Side B: M48 T threads
  • Color: Black
$39.00

William Optics 48mm T-Mount for Fuji FX - Black - TM-FJ-X-M48

SKU: WYO-TM-FJ-X-M48
  • Connection Side A: Fuji FX
  • Connection Side B: M48 T threads
  • Color: Black
$39.00

Baader M68 to M74 Thread Adapter for Sky-Watcher Esprit, TS-Optics, and Omegon - M68/M74

SKU: BAD-M68-M74
  • Adapter Connector Type - Side A: M68
  • Adapter Connector Type - Side B: M74
  • Compatibility: Sky-Watcher Esprit, TS-Optics, and Omegon
  • Optical Length: 12.7 mm
$46.00
Baader Connection Ring for Hyperion Mark IV Zoom Eyepiece to Kowa TSN 770 and 880 Spotting Scopes

Baader Hyperion Mark IV Zoom Eyepiece to M54 Kowa TSN 770/880 Spotting Scope Adapter - HYP-KOWA

SKU: BAD-HYP-KOWA
  • Adapter Connector Type - Side A: M53
  • Adapter Connector Type - Side B: M54
  • Eyepiece Compatibility: Baader Hyperion Mark IV Zoom
  • Spotting Scope Compatibility: Kowa TSN 770/880
$35.00
Baader Planetarium Zero Length Adapter - 2" SC to M41.5 for Hyperion Mark IV Zoom Eyepieces

Baader Zero Length 2" SC to M41.5 Reducing Adapter Ring - HYP-SPOT1

SKU: BAD-HYP-SPOT1
  • Adapter Connector Type - Side A: Small SC (2")
  • Adapter Connector Type - Side B: M41.5
  • Eyepiece Compatibility: Baader Hyperion Mark IV Zoom
  • Optical Length: None
$42.00
Baader Planetarium Zero Length Adapter - 2" SC to M44i for Hyperion Mark IV Zoom Eyepieces

Baader Zero Length 2" SC to M44i Reducing Adapter Ring - HYP-SPOT2

SKU: BAD-HYP-SPOT2
  • Adapter Connector Type - Side A: Small SC (2")
  • Adapter Connector Type - Side B: M44
  • Eyepiece Compatibility: Baader Hyperion Mark IV Zoom
  • Optical Length: None
$32.00

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

PrimaLuceLab Adapter ESATTO 3" for Takahashi TSA 120 - PL3600296

SKU: PLL-PL3600296
  • Side A Connection: M81
  • Side B Connection: Takahashi TSA 120 Telescope System
  • Designed to connect the PrimaLuceLab ESATTO 3" to the Takahashi TSA 120 Telescope
$295.00

PrimaLuceLab M110 to M68 Adapter for ESATTO 4" with Stop Ring - PL3600312

SKU: PLL-PL3600312
  • Adapter Connector Type - Side A: M110
  • Adapter Connector Type - Side B: M68
  • Optical Length: 5.5 mm
$195.00

PrimaLuceLab M110 to M95 Female Adapter for ESATTO 4" - PL3600319

SKU: PLL-PL3600319
  • Adapter Connector Type - Side A: M110
  • Adapter Connector Type - Side B: Female M95
  • Connects The ESATTO 4" to Takahashi Photographic Adapters
$155.00

PrimaLuceLab M110 to M98 Adapter with Stop Ring - PL3600322

SKU: PLL-PL3600322
  • Adapter Connector Type - Side A: M110
  • Adapter Connector Type - Side B: M98
  • Optical Length: 5.5 mm
$195.00
Starizona Variable M42 T-Thread Adapter - 15-20mm Short Version

Starizona Variable M42 T-Thread Adapter - Short Version - VAR-M42-SHORT

SKU: STZ-VAR-M42-SHORT
  • Adapter Connector Type: T or T2 (M42)
  • Length is adjustable from 15 mm to 20 mm
  • Makes achieving optimal camera backfocus easy
  • Also available in 20-30 mm and 30-45 mm lengths
$34.95
Starizona Variable M42 T-Thread Adapter - 20-30mm Medium Version

Starizona Variable M42 T-Thread Adapter - Medium Version - VAR-M42-MEDIUM

SKU: STZ-VAR-M42-MEDIUM
  • Adapter Connector Type: T or T2 (M42)
  • Length is adjustable from 20 mm to 30 mm
  • Makes achieving optimal camera backfocus easy
  • Also available in 15-20 mm and 30-45 mm lengths
$39.95
Starizona Variable M42 T-Thread Adapter - 30-45mm Long Version

Starizona Variable M42 T-Thread Adapter - Long Version - VAR-M42-LONG

SKU: STZ-VAR-M42-LONG
  • Adapter Connector Type: T or T2 (M42)
  • Length is adjustable from 30 mm to 45 mm
  • Makes achieving optimal camera backfocus easy
  • Also available in 15-20 mm and 20-30 mm lengths
$44.95
Starizona Set of Three Variable Length M42 T-Thread Adapters

Starizona Variable M42 T-Thread Adapter Kit - VAR-M42-KIT

SKU: STZ-VAR-M42-KIT
  • Set of three M42 T-Thread Adapters with adjustable lengths
  • Includes short (15-20 mm), medium (20-30 mm), and long (30-45 mm) adapters
  • Allows the proper back focus for your camera setup to be achieved without difficulty
  • These adapters are also available individually
$104.95
Baader Hyperion T-Adapter for Mark I & Mark II Clickstop Zoom Eyepieces

Baader Hyperion T-Adapter for Mark I & Mark II Clickstop Zooms - HTA54/T2

SKU: BAD-HTA54T2
  • Adapter Connector Type - Side A: M54
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Made specifically for the Baader ClickStop Zoom Eyepiece
  • Permits external T-thread at the eyepiece level for projection photography
  • This Hyperion T-Adapter allows ideal magnification and projection to be obtained when used between your camera and eyepiece
$27.00
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
Baader 10 mm Ultra Short T-Adapter for SCT

Baader Planetarium Ultra Short 10mm T-Adapter for SCT - SCT-T

SKU: BAD-SCT-T
  • Adapter Connector Type - Side A: Small SCT (2")
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 10 mm
  • Without using too much back focus, this adapter connects standard Schmidt-Cassegrain telescopes and T-threaded accessories
$52.00
 2" T2 Nose Piece Separated

Baader Planetarium 2" T2 Nose Piece - T2-16

SKU: BAD-T2-16
  • Adapter Connector Type - Side A: 2"
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Contains 48 mm threads in addition to internal standard 42 mm T2 threads to enable a greater variety of uses
  • Thorough inner sharp v-threading and blackening
$42.00
QSI Lens Adapter for Canon EOS SLR Cameras

QSI Canon EOS DSLR Lens Adapter for 500/600 WS Series Cameras - No T-Ring - QSI0140

SKU: QSI-QSI0140
  • Side A Connection: Canon EOS Lenses
  • Side B Connection: QSI 500/600 Series WS Cameras
  • Provides correct back focus but Canon EOS T Ring is also required, sold separately
  • Not compatible with WSG cameras
$199.00

QSI Nikon SLR/DSLR Lens Adapter for 500/600 WS Series Cameras - No T-Ring - QSI0193

SKU: QSI-QSI0193
  • Side A Connection: Nikon Lens
  • Side B Connection: QSI 500/600 Series WS Cameras
  • Not compatible with WSG cameras
  • Requires Nikon T ring, sold separately
$150.00

QSI C-Mount Guide Camera Adapter for WSG Cameras - QSI0154

SKU: QSI-QSI0154
  • Adapter Connector Type - Side A: C or CS
  • Adapter Connector Type - Side B: SBIG (2.156")
Free shipping Free shipping
$69.95

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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