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 3 of 11 
Orion Telescopes
Coronado Adapter Ring for 90mm Double Stack Filter
$29.99
 
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  • Adapter for Coronado primary Ha filter
  • When coupled to 2nd etalon, reduces original .7 angstrom bandpass of the Hydrogen-Alpha telescope to .5 angstrom


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Item #  55740
Mfg Model #  AP190

Required to double stack an SME90 external primary Etalon, double stacking an original 90mm Coronado or Coronado II telescope such as an 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.

CAUTION: Never look at the Sun, either directly or through a telescope, without a professionally made protective solar filter installed that completely covers the front of the instrument, or permanent eye damage could result.

Designed and manufactured in North America.

When an item is not in-stock we will ship it as soon as it becomes available. Typically in-stock items will ship first and backordered items will follow as soon as they are available.

SHIPPING RESTRICTIONS APPLY FOR THIS PRODUCT

This product is available to ship Standard delivery within the 50 US states. Delivery is not available to US territories/protectorates or APO/DPO/FPO addresses. Delivery is available to Canada.

Returns

The Return Policy & Procedure for this product is different than Orion's standard return policy. Click here to learn more.

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