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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Adapters

Connect your gear with confidence using our wide selection of astronomy adapters. This collection includes all the essential adapters you need to seamlessly link telescopes, cameras, eyepieces, filters, and other accessories for both visual observation and astrophotography. Whether you're attaching a DSLR to a focuser, threading a filter wheel to a CMOS camera, or adapting between different thread sizes or mounting standards, our high-quality adapters ensure secure, precise connections. Built for compatibility and durability, these adapters make your setup more versatile and ready for any observing or imaging session.

Filters

$59.99 - $59.99
$59.99
$59.99 - $59.99
$59.99

Explore Scientific M48x0.75 Adapter for 2.5 HEX

ES-625801

Explore Scientific M48x0.75 Adapter for 2.5 HEX

$59.99 - $59.99
$59.99
$59.99 - $59.99
$59.99
$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99

Explore Scientific Rack and Pinion Focuser 1" Extension Tube

ES-ESRPEXT1

Explore Scientific Rack and Pinion Focuser 1" Extension Tube

$29.99 - $29.99
$29.99
$29.99 - $29.99
$29.99
$34.99 - $34.99
$34.99
$34.99 - $34.99
$34.99

Explore Scientific Rack and Pinion Focuser 2" Extension Tube

ES-ESRPEXT2
1 in stock

Explore Scientific Rack and Pinion Focuser 2" Extension Tube

$34.99 - $34.99
$34.99
$34.99 - $34.99
$34.99
$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99

Explore Scientific Rack and Pinion Focuser 2.5" Extension Tube

ES-ESHEXEXT2
1 in stock

Explore Scientific Rack and Pinion Focuser 2.5" Extension Tube

$39.99 - $39.99
$39.99
$39.99 - $39.99
$39.99
$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00

Explore Scientific T2 Ring - Canon DSLR 1.5MM Light-Path

ES-510369

This special T2-Ring for Canon DSLR Camera offers a extreme short light-path of only 1,5mm. Regular T2-Rings needs a light-path of about 11-12mm an...

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$50.00 - $50.00
$50.00
$50.00 - $50.00
$50.00
$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99

Explore Scientific T2 Ring - Canon EOS

ES-49-21350

Connect your Microscope or Telescope with a Canon EOS SLR camera and take images or videos* of your observed object! T-Mounts are the connecting pi...

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$35.99 - $35.99
$35.99
$35.99 - $35.99
$35.99
$24.20 - $24.20
$24.20
$24.20 - $24.20
$24.20

Lumicon Thread-in Extension Tube w/ 2" Eyepiece Push Back - 2"

LUM-LA1025
Only 1 left!

Lumicon 2 Inch Thread-in Extension Tube – 2 Inch Eyepiece Push Back threads into 2" telescope eyepieces for small focus extension. Provides an exte...

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$24.20 - $24.20
$24.20
$24.20 - $24.20
$24.20
$19.00 - $19.00
$19.00
$19.00 - $19.00
$19.00

Lunt 1.25" Adapter for Blocking Filters

LSS-ADP2-1.25

Allows the use of a Lunt 2″ blocking filter in a 1.25″ focuser (blocking filter not included). Black-anodized aluminum.

$19.00 - $19.00
$19.00
$19.00 - $19.00
$19.00
$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00

Lunt Adapter T2 to 2" Eyepiece Tube

LSS-LST2-2"
2 in stock

This T2 to 2″ Eyepiece Tube Adapter allows the use of 2″ eyepieces with Lunt Solar Systems blocking filters, CaK modules, and all telescopes with ...

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$43.00 - $43.00
$43.00
$43.00 - $43.00
$43.00
$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00

Optec DSI 3.5" Extension Tube Set - 5 Pieces

OPC-19890

Rich Simons of Deep Sky Instruments and Optec have jointly developed a new, larger diameter standard spacer for large aperture telescopes. Like th...

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$250.00 - $250.00
$250.00
$250.00 - $250.00
$250.00
$95.00 - $95.00
$95.00
$95.00 - $95.00
$95.00

Optec DSI 3.5"x24tpi(M) to M72x1(M) Takahashi Adapter

OPC-19917

Optec-DSI 3.5x24tpi male thread to M72x1mm (male) Takahashi thread. Outside Diameter: 3.82" (97.0mm) Overall Height: 0.74" (18.8mm) Clear Aperture...

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$95.00 - $95.00
$95.00
$95.00 - $95.00
$95.00
$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00

Optec OPTEC-4300 to DSI 3.5"(F) Adapter

OPC-19830

The #19830 OPTEC-4300 to female Optec/DSI 3.5" threaded receiver allows any combination of our DSI 3.5-inch spacers to be easily installed on the c...

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$135.00 - $135.00
$135.00
$135.00 - $135.00
$135.00
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32

Pegasus Adapter M54 Male to M42 Female

PEG-ADAPT-M54M-M42F
2 in stock

Adapter Thickness: 2.0mm Thread: Pitch 0.75mm / 6 mm length M54 side has a M48 internal thread

$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32

Pegasus Adapter M54 Male to M42 Male

PEG-ADAPT-M54M-M42M
2 in stock

Adapter Thickness: 2.0mm Thread: Pitch 0.75mm / 6 mm length M54 side has a M48 internal thread

$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32

Pegasus Adapter M54 Male to M48 Female

PEG-ADAPT-M54M-M48F
1 in stock

Pegasus Adapter M54 Male to M48 Female

$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32

Pegasus Adapter M54 Male to M48 Male

PEG-ADAPT-M54M-M48M
1 in stock

Adapter Thickness: 2.0mm Thread: Pitch 0.75mm / 4 mm length M54 side has a M48 internal thread

$25.32 - $25.32
$25.32
$25.32 - $25.32
$25.32
$24.78 - $24.78
$24.78
$24.78 - $24.78
$24.78

Pegasus Adapter M54 Male to M54 Male

PEG-ADAPT-M54M-M54M

Pegasus Adapter M54 Male to M54 Male

$24.78 - $24.78
$24.78
$24.78 - $24.78
$24.78
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M42 Female Adapter

PEG-ADAPT-M68M-M42F
2 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M42 Thread Pitch 0.75mm

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M42 Male Adapter

PEG-ADAPT-M68M-M42M
1 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M42 Thread Pitch 0.75mm / 4mm length

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M48 Female Adapter

PEG-ADAPT-M68M-M48F
2 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M48 Thread Pitch 0.75mm

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M48 Male Adapter

PEG-ADAPT-M68M-M48M
2 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M48 Thread Pitch 0.75mm / 4mm length Inner hole with M42 / 0.75mm

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M54 Female Adapter

PEG-ADAPT-M68M-M54F
2 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4mm length M54 Thread Pitch 0.75mm

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50

Pegasus M68 Male to M54 Male Adapter

PEG-ADAPT-M68M-M54M
2 in stock

Adapter (Backfocus) Thickness: 1.4 mm M68 Thread: Pitch 1.0mm / 4 mm length M54 Thread Pitch 0.75mm / 4mm length Inner hole with M48 / 0.75mm

$27.50 - $27.50
$27.50
$27.50 - $27.50
$27.50
$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00

Pegasus M68 Male to M54 Male Adapter - 20mm

PEG-ADAPT-M68M-M54M-20

Adapter (Backfocus) Thickness: 20 mm (backfocus) M68 Thread: Pitch 1.0mm / 4 mm length M54 Thread Pitch 0.75mm / 4mm length Inner hole with M48 / ...

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$35.00 - $35.00
$35.00
$35.00 - $35.00
$35.00