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Coronado Doublestack SM90

SKU : CI-AP190

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Product Details

  • Coronado Adapter Plate #CI-AP190:

    Required to double stack a CI-SME90 external primary Etalon, double stacking an original 90 mm Coronado or Coronado II telescope such as an CI-SMT90. Telescope and double stacking filter sold separately.

    Reduces original .7 angstrom bandpass of the Hydrogen-alpha telescope to .5 angstrom, dramatically increasing visibility of surface detail such as granularity and active regions on the surface of the Sun.

    • Adapter for Coronado primary Ha filter
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