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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.

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Visual Backs & Eyepiece Adapters

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Original price $77.00 - Original price $77.00
Original price
$77.00
$77.00 - $77.00
Current price $77.00

Baader M55/M68 Adapter for 2" Baader Mirrors & Prisms

BAA-2956110

Converts Baader 2" diagonals to a rigid M68 threaded connection Attaches to the M55 female thread on the diagonal body Provides a standard M68 x 1...

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Original price $77.00 - Original price $77.00
Original price
$77.00
$77.00 - $77.00
Current price $77.00
Original price $71.00 - Original price $71.00
Original price
$71.00
$71.00 - $71.00
Current price $71.00

Baader 2" Locking Ring for SCTs 8"/9.25"/11"/14"

BAA-2458270
1 in stock

Direct-threads to the rear cell of Schmidt-Cassegrain telescopes Compatible with 8", 9.25", 11", and 14" SCT models Designed for Baader 2" zenith ...

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Original price $71.00 - Original price $71.00
Original price
$71.00
$71.00 - $71.00
Current price $71.00
Original price $80.00 - Original price $80.00
Original price
$80.00
$80.00 - $80.00
Current price $80.00

Starlight Instruments Eyepiece Adapter "Easy Grip" w/ Compression Ring (Fits 1.25" Eyepieces)

SI-EA20-205EG

Adapts 2" focusers and diagonals to use 1.25" eyepieces "Easy Grip" knurled exterior for secure handling, even with gloves Non-marring brass compr...

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Original price $80.00 - Original price $80.00
Original price
$80.00
$80.00 - $80.00
Current price $80.00
Original price $80.00 - Original price $80.00
Original price
$80.00
$80.00 - $80.00
Current price $80.00

Starlight Instruments Eyepiece Adapter Flush Mount w/ Compression Ring (Fits 1.25" Eyepieces)

SI-EA20-205LP

Adapts 2-inch focusers and diagonals to accept 1.25-inch eyepieces Flush-mount design provides a minimal profile for focus-critical setups Brass c...

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Original price $80.00 - Original price $80.00
Original price
$80.00
$80.00 - $80.00
Current price $80.00
Original price $270.00 - Original price $270.00
Original price
$270.00
$270.00 - $270.00
Current price $270.00

Starlight Instruments Eyepiece Adapter for Leica Eyepiece

SI-EA20-EP2-L-37

Adapts select Leica eyepieces for astronomical use Precision-machined by Starlight Instruments for a secure fit Enables use of premium spotting sc...

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Original price $270.00 - Original price $270.00
Original price
$270.00
$270.00 - $270.00
Current price $270.00
Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00

William Optics M48 Push-in Nosepiece for WO 2" Diagonals & UniGuide Scope

WO-WD-DIG2A
1 in stock

Connects M48 Threaded Accessories to 2" Push-in Focusers Female M48 Threads for 2" Filter Attachment Adds a Fixed 36 mm of Optical Length Male M48...

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Original price $39.00 - Original price $39.00
Original price
$39.00
$39.00 - $39.00
Current price $39.00
Original price $88.00 - Original price $88.00
Original price
$88.00
$88.00 - $88.00
Current price $88.00

William Optics 2" RotoLock - M63

WO-F-ROTO-A63SL

2" RotoLock adapter designed for M63 threads Ensures a secure and precise connection for 2" accessories ...

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Original price $88.00 - Original price $88.00
Original price
$88.00
$88.00 - $88.00
Current price $88.00
Original price $228.00 - Original price $228.00
Original price
$228.00
$228.00 - $228.00
Current price $228.00

William Optics 3.5"-2" RotoLock Visual Back Adapter

Options available

Adapts 3.5" William Optics focusers to a 2" receiver Features the secure, self-centering RotoLock mechanism Connects via M92 x 1 male threads Adds...

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Original price $228.00 - Original price $228.00
Original price
$228.00
$228.00 - $228.00
Current price $228.00
Original price $43.00 - Original price $43.00
Original price
$43.00
$43.00 - $43.00
Current price $43.00

William Optics SCT Connection for WO Diagonals - Gold

WO-D-SCT-TA

Connects M50.8 Male to M48 Female Threads Adds 13.8 mm of Optical Length Female Thread: M50.8 Male Thread: M48 Signature William Optics Gold Anodi...

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Original price $43.00 - Original price $43.00
Original price
$43.00
$43.00 - $43.00
Current price $43.00
Original price $29.99 - Original price $29.99
Original price
$29.99
$29.99 - $29.99
Current price $29.99

Explore Scientific Rack and Pinion Focuser 1" Extension Tube

ES-ESRPEXT1

Adds 1 inch of focuser back travel Designed for Explore Scientific 2-inch Rack & Pinion Focusers Compatible with Explore Scientific ED APO tel...

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Original price $29.99 - Original price $29.99
Original price
$29.99
$29.99 - $29.99
Current price $29.99
Original price $46.00 - Original price $46.00
Original price
$46.00
$46.00 - $46.00
Current price $46.00

Celestron 1.25" Visual Back

CEL-93653-A

Adapts Schmidt-Cassegrain rear cell threads to a 1.25" opening Accepts all standard 1.25" accessories like diagonals, eyepieces, and Barlow lenses...

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Original price $46.00 - Original price $46.00
Original price
$46.00
$46.00 - $46.00
Current price $46.00
Original price $69.95 - Original price $69.95
Original price
$69.95
$69.95 - $69.95
Current price $69.95

Celestron 1.25" Universal Barlow and T-Adapter

CEL-93640

Three-in-one design: 2x visual Barlow, prime focus T-adapter, and tele-extended T-adapter Doubles the magnification of any 1.25" eyepiece Connects...

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Original price $69.95 - Original price $69.95
Original price
$69.95
$69.95 - $69.95
Current price $69.95