Coronado Doublestack SM90
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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