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2" Crayford focuser for 6", 8" and 9" Schmidt-Cassegrain telescopes

2" Crayford focuser for Schmidt-Cassegrain telescopes, prevents mirror drift

♦ Suitable for small SC thread

♦ Also suitable for accessories with a plug size of 1.25" thanks to the supplied adapter

♦ 2" filter can also be used for 1.25" eyepieces thanks to the adapter's 2" filter thread

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Entrega entre 7 y 9 días laborables

TS-Optics 2" Crayford Focuser for Schmidt-Cassegrain Telescopes

Shifting is always a problem with Schmidt-Cassegrains and many other primary mirror focusing devices. A good Crayford extract is a great way to avoid this change.

This focuser is the ideal solution for astrophotography, including adaptation to the small 2" SC thread. The focuser does NOT fit the large SC thread!

The special advantage of the TSFOCSC: adaptation to the small 2" SC thread

The SC adapter fits Celestron  small Schmidt-Cassegrain thread.

Practical information from Teleskop-Service: What is change?

Anyone who works with Schmidt-Cassegrains, Makutovs... just all devices whose focusing occurs by shifting the primary mirror will inevitably come across the term "mirror shift".

When the main mirror is pushed back and forth, it tilts minimally. When looking through the eyepiece, the star jumps or shifts during focusing. This is called mirror shift. This wobble of the star during focusing can be avoided with suitable focusers that are screwed onto the telescope. Coarse focusing still occurs with the primary mirror. Fine focusing is then done with the focuser.


Type: 2" Crayford - shifting-free adjustment due to ball bearings
Clamping: Compression ring clamp for a secure and gentle hold
Reduction to 1.25": Included - with ring clamp and 2" filter thread
Adjustment range: 35 mm
Overall height from SC connection to 2" clamping: 115 mm
Outer diameter at SC connection: 87 mm
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