Coronado Adapter Ring for 90mm Double Stack Filter

MSRP: $34.99 Please see your local authorized reseller for pricing and availability.

View All Specifications

  • Adapter ring for original single stack SM90 or SMT90 models
  • When coupled to 2nd etalon, reduces original 0.7 angstrom bandpass of the Hydrogen-Alpha telescope to 0.5 angstrom
  • Designed for older SM90 Etalon - not needed for SME90 or SMIII system
  • Threads components solidly together, ensuring a tilt free connection
  • Designed and Manufactured in North America.
Item #: AP190

Where To Buy?

  • Woodland Hills Camera & Telescopes
  • Orion Telescopes & Binoculars
  • High Point Scientific
  • Mile High Astronomy
  • Astroshop.eu
  • Agena Astro
  • Khan Scope
  • First Light Optics

This adapter ring is required to double stack an SME90 external primary Etalon, double stacking an original 90mm Coronado or Coronado II telescope such as an SMT90.

Once double-stacked, the system reduces the original 0.7 angstrom bandpass of the Hydrogen-Alpha telescope to 0.5 angstrom, dramatically increasing visibility of surface detail such as granularity and active regions on the surface of the Sun.

Note, this adapter ring is only required to stack an additional etalon onto the original SM90/SMT90. It is not required if you have a newer SME90 or SMIII system. Telescope and double stacking filter sold separately.

Designed and Manufactured in North America.

Warranty:
Limited Warranty against defects in materials or workmanship for two years from date of purchase. This warranty is provided by Meade for the benefit of the original retail purchaser only. For complete warranty details contact Meade at 800-626-3233.
User level
Advanced
Warranty
Two year