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Adapters, Spacers & Extensions for Telescopes

Items 1 - 25 of 53

ZWO 1.25" T Mount Adapter - TMOUNT125

SKU: ZWO-TMOUNT125
  • Adapter Connector Type - Side A: 1.25" barrel
  • Adapter Connector Type - Side B: T or T2 (M42)
  • 1.25" barrel has internal M28.5 x 0.6 threads
$18.00
ZWO T2 to T2 Adapter

ZWO T2 to T2 Adapter - T2-T2

SKU: ZWO-T2-T2
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 8 mm
$12.00

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

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 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
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
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

QSI OAG T-Mount Adapter - QSI0155

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

Starizona T-Adapter with Filter Holder for EdgeHD 8" SCT - TA-HD8-F

SKU: STZ-TA-HD8-F
  • Adapter Connector Type - Side A: T (M42)
  • Adapter Connector Type - Side B: Small SCT (2")
  • Enables connection between DSLR and EdgeHD 8" SCT
  • Includes a 48mm (2") filter thread
$99.95
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
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 T-2/T-2 Inverter

Baader Planetarium T-2 / T-2 Inverter - T2-26

SKU: BAD-T2-26
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 0 mm
$34.00
Baader Planetarium 10 mm T-2 Conversion Ring

Baader Planetarium T-2 Conversion Ring - 10 mm - T2-34

SKU: BAD-T2-34
  • 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
$26.00
ZWO M42 to M42 21mm Extension

ZWO 21mm M42 to M42 Extension - T2-EXT-21

SKU: ZWO-T2-EXT-21
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: T or T2 (M42)
  • Adapter or Spacer Length in mm: 21 mm
$18.00
ZWO M42 to M48 16.5mm Extension

ZWO 16.5mm M42 to M48 Extension - M42-M48-16.5MM

SKU: ZWO-M42-M48-16.5MM
  • Adapter Connector Type - Side A: T or T2 (M42)
  • Adapter Connector Type - Side B: Wide T or T2 (48mm)
  • Adapter or Spacer Length in mm: 16.5 mm
$18.00
Baader Planetarium T-2/M37 DT Adapter

Baader T-2/M37 Digital T Adapter for ADPS System - DT37

SKU: BAD-DT37
  • Side A Connection: M42 T thread
  • Side B Connection: M37
  • Compatible with Sony DSC S30, S50, S70, P30, P50, as well as MVC FD87, CD200, and CD250 video cameras
$29.00

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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