Takahashi Extension Tube S (TKP00105)
Manufacturer Part # TKP00105
Takahashi Extension Tube S (TKP00105)
The “Extension Tube S” provides a 15 mm increase in back-focus with M43 threading—ideal when imaging with extenders or flatteners on Japanese refractors. Its wide interior barrel prevents vignetting, while machining and finish keep with Takahashi’s understated elegance.
Unlike stacking commonplace tubes, this precision-made ring preserves optical alignment and mechanical support. Use it when your imaging train needs just a little more spacing, without the bulk or fuss of generic spacers.
Cloudy Nights Community Insight:
Imagers recommend the S tube when adding a flattener and camera adapter; one report states that adding the extra 15 mm “was the difference between losing the last stop of focus and getting crisp stars.”
Observing Tip:
Place this between your flattener or extender and camera coupling when drawtube reach is limited. It preserves focus margin while keeping trains compact—and balanced.