Coronado 60mm Doublestack Adapter Ring

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Coronado 60mm Doublestack Adapter Ring

Coronado Adapter Plate #AP186. Required to double stack an SM60 external primary Etalon, double stacking an original 40mm Coronado or Coronado II telescope such as an SM60. Telescope and double stacking filter sold separately.

Together with the double stack filter this ring reduces the 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.

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