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      • × Chroma 1.25″ H-alpha 3nm Telescope Filter SupplyChroma 1.25″ H-alpha 3nm Telescope Filter Supply 1 × $97.00
      • × Takahashi 645 0.72x Reducer for CCA-250 For SaleTakahashi 645 0.72x Reducer for CCA-250 For Sale 1 × $97.00

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    • × Chroma 1.25″ H-alpha 3nm Telescope Filter SupplyChroma 1.25″ H-alpha 3nm Telescope Filter Supply 1 × $97.00
    • × Takahashi 645 0.72x Reducer for CCA-250 For SaleTakahashi 645 0.72x Reducer for CCA-250 For Sale 1 × $97.00

    Subtotal: $194.00

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Home / Takahashi

Takahashi TOA 645 Flattener 0.99X for TOA150B Discount

$945.00 Original price was: $945.00.$97.00Current price is: $97.00.

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Takahashi TOA 645 Flattener 0.99X for TOA150B

The newly-designed 645 flattener features two fully multi-coated lens elements in two groups and provides outstanding correction out to a 60 mm image circle. Being designed specifically for the TOA-130N and TOA-150B, RMS spot diameters of 1 micron on-axis are achieved. At a 30 mm diameter image circle, the RMS spot diameter is 2 microns, and at 43 mm it is 3 microns. Even out to the full diameter of 60 mm, the RMS spot diameter is 5 microns. With these spot sizes, images are nearly aberration on even the newest small pixel sensors.

For the TOA-150 with the included adapter ring (S), the flattener has a male M72 facing the telescope and a female M54 facing the camera. The metal back distance from the M54 thread is 56.2 mm. If you remove the adapter ring (S), the camera can interface with a female M72 thread with a metal back distance of 73.9 mm.

  • Features two fully multi-coated lens elements in two groups and provides outstanding correction out to a 60 mm image circle
  • At a 30 mm diameter image circle, the RMS spot diameter is 2 microns, and at 43 mm it is 3 microns. Even out to the full diameter of 60 mm, the RMS spot diameter is 5 microns
  • For the TOA-150 with the included adapter ring (S), the flattener has a male M72 facing the telescope and a female M54 facing the camera
  • Takahashi TOA 645 Flattener 0.99X for TOA150B
  • Adapter ring

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