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TS-Optics 20 mm spacer for TS UNCN2-G2 focusers

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TS-Optics 20 mm spacer ring for 2" UNCN2-G2 focusers

The spacer ring is the ideal problem solution when the focus is too far from the focuser or when a long coma corrector is to be used. The focuser tube does not need to be completely backed out and you can securely clamp or screw the accessory, for example the coma corrector.

Connecting the spacer is very simple.

  • Separate the focuser from the base by loosening the small grub screws. Then remove the focuser.
  • Insert the 20 mm spacer into the base, please make sure that the spacer is fully seated on the base. Then retighten the grub screws on the base.
  • Then place the focuser in the spacer and fix it to the base with the three grub screws.

... and the conversion is finished. Usually, even the collimation is correct and you can immediately start with photography or observation.


  • Suitable for TS-Optics UNCN2-G2 Newtonian focusers.
  • The spacer is mounted between the base and the focuser. The focuser is fixed with three grub screws.
  • Ideal problem solution when the focus position is too far from the focuser.
  • Several spacers can also be used in succession.

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Baader Laser MarkIII - collimation 1.25" ultra précis

TS-Optics 20 mm spacer for TS UNCN2-G2 focusers

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