Lunático Astronomía

T-2 / M-48 fine tuning ring



This ring allows adjusting distances with more precision as with extension tubes. It fits above the T2 filter thread of your adapter.

Fields of use:

  • Optimal back focus adjustment between camera / off-axis guider/corrector
  • Prevents threads from blocking
  • Too long T2 threads can be shortened

Technical details:

  • Stainless steel
  • 0.3, 0.5, 1, 1.5 mm thick (depends on the model)
  • Inner bore diameter:
    • 42,1mm (M-42 version)
    • 49mm (M-48 version)
  • Outer diameter: 55 mm:
    • 55mm (M-42 version)
    • 60mm (M-48 version)

0,3mm., 0,5mm., 1mm., 1,5mm.


T-2, M-48

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