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Coronado Filters

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10mm Blocking Filter
Coronado BF-10 right angle (1.25" diagonal) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Cannot be used without an SM front cell.

Secondary interference filter for full disc image of the Sun for telescopes up to 1,000mm focal length.


Our price: $499.00 (€434.13)
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15mm Blocking Filter
Coronado BF-15 right angle (1.25" diagonal) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Cannot be used without an SM front cell.

Secondary interference filter for full disc image of the Sun for telescopes up to 1,500mm focal length. .


Our price: $699.00 (€608.13)
Quantity
30mm Blocking Filter (Straight Through)

Coronado BF-30 (straight through) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Cannot be used without an SM front cell. Secondary interference filter for full disc image of the Sun for telescopes up to 3,000mm focal length.


Our price: $1599.00 (€1391.13)
Quantity
5mm Blocking Filter
Coronado BF-5 right angle (1.25" diagonal) type secondary blocking filter. The blocking filter is the second element in any Coronado H-alpha system, it is just as crucial to your safety and the system's performance as the front element. Cannot be used without an SM front cell.

Secondary interference filter for full disc image of the Sun for telescopes up to 500mm focal length.


Our price: $329.00 (€286.23)
Quantity
Coronado Adapter Plate #AP185
Coronado Adapter Plate #AP185. Required to double stack an SME40 external primary Etalon, double stacking an original 40mm Coronado or Coronado II telescope such as an SMT40 or PST. Telescope and double stacking filter sold separately.

Our price: $19.99 (€17.39)
Market price: $29.00 , save 31%
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Coronado Adapter Plate #AP186

Coronado Adapter Plate #AP186. Required to double stack an SME60 external primary Etalon, double stacking an original 60mm Coronado or Coronado II telescope such as an SMT60. Telescope and double stacking filter sold separately.


Our price: $19.99 (€17.39)
Market price: $29.00 , save 31%
Quantity
Coronado Adapter Plate #AP190

Coronado Adapter Plate #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.

 


Our price: $29.99 (€26.09)
Market price: $39.00 , save 23%
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Coronado SM40 Double Stacking filter with T-max
Coronado SM40 Double Stacking filter. H-Alpha Narrowband Element Front Unit for SM40. Includes double stacking 40mm front filter and Tmax. Creates a double stacked unit from your existing Coronado SM40, narrowing bandpass from the standard .7A to .5A and increasing visibility of surface detail on the Solar disk. Closeout pricing, while supplies last!

Our price: $559.00 (€486.33)
Quantity
Coronado SolarMax II 60mm Solar Filter set with RichView tuning and 30mm Blocking Filter
  • SolarMax II 60mm Solar Filter set with RichView tuning system
  • Straight through 30mm Blocking Filter

Our price: $2499.00 (€2174.13)
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Doppler Tuning Unit for SM40
For use with a Coronado SM40 primary etalon. The Doppler Tuning Unit for SM40 (TMax) de-tunes the filters towards the blue end of the H-alpha line. It accomplishes this by changing the angle at which the light passes though the etalon. Mounts behind SolarMax primary filter etalon unit, sold separately.


Our price: $169.00 (€147.03)
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