Extension tube 23.5 - 27 mm M54

Name: TS Optics Extension tube 23.5 - 27 mm M54
Brand: TS Optics
Price: 82 USD

$ 82.00 incl. VAT plus shipping costs

short-term
Product can be shipped as of 29.05.2026 + lead time

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Specially designed for Skywatcher focusers
Connection on telescopic end: M54.3x1 external thread
Connection at other end: M54.3x1 internal thread
Optical length: 23.5–27 millimetres
Variably adjustable with locking ring

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advice for Telescope accessories

Product description

Skywatcher uses the M54 internal thread for screw connections on its focusers. These adaptors extend the focuser tube by 23.5 to 27 mm.
Skywatcher does not use a standard M54x1 internal thread; it is a ‘non-standard’ thread with a diameter of approx. 54.3 mm. This extension takes this into account.

TS Optics is a brand of Teleskop-Service.