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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.

William Optics RotoLock Visual Back Adapters

William Optics RotoLock adapters are visual backs that hold a diagonal or eyepiece with a rotating clamp ring, which centers it and lets you turn it without loosening the connection.

The range includes 1.25" and 2" adapters for SCT threads, a 2" RotoLock Adapter SCT 3.28" for larger thread sizes, a 2" RotoLock for M63 focusers, a 2"-1.25" reducer and a 3.5"-2" adapter for large focusers. They suit refractor and SCT owners who want a secure, centered visual back.

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$58.00 - $58.00
$58.00
$58.00 - $58.00
$58.00

William Optics 2"-1.25" RotoLock Visual Back Adapter

Options available

Converts 2" focusers to a 1.25" holder Innovative RotoLock self-centering mechanism Dual input: 2" push-in barrel and female M48 threads Adds 38 m...

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$58.00 - $58.00
$58.00
$58.00 - $58.00
$58.00
$99.00 - $99.00
$99.00
$99.00 - $99.00
$99.00

William Optics 2" RotoLock Adapter - SCT

WO-D-ROTO-A2-SCT2F

Designed for Schmidt-Cassegrain Telescopes (SCT) Features a secure RotoLock mechanism for 2" accessories Description The Willi...

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$99.00 - $99.00
$99.00
$99.00 - $99.00
$99.00
$98.00 - $98.00
$98.00
$98.00 - $98.00
$98.00

William Optics 1.25" RotoLock Visual Back Adapter - SCT

WO-F-ROTO-A2-125-SCT-TA

Securely holds 1.25" eyepieces and accessories RotoLock system provides self-centering, even grip Attaches to standard SCT rear threads (M50.8 fem...

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$98.00 - $98.00
$98.00
$98.00 - $98.00
$98.00
$228.00 - $228.00
$228.00
$228.00 - $228.00
$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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$228.00 - $228.00
$228.00
$228.00 - $228.00
$228.00
$88.00 - $88.00
$88.00
$88.00 - $88.00
$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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$88.00 - $88.00
$88.00
$88.00 - $88.00
$88.00