Coronado

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  1. Coronado - SolarMax II 90mm Filter with RichView™ Tuning with 15mm Blocking Filter

    $3,099.00
    SKU: COR-SMF90-15

    Wait Time is 3-5 Days

    Coronado by Meade SolarMax II Solar Filter set with RichView tuning system. Includes 90mm diameter primary H-Alpha etalon filter with sub 0.7 angstrom bandwidth and Blocking Filter
    FREE SHIPPING(48 States)
  2. Coronado - SolarMax II 90mm Filter with RichView Tuning with 30mm Blocking Filter

    $3,999.00
    SKU: COR-SMF90-30

    In stock

    Coronado by Meade SolarMax II Solar Filter set with RichView tuning system. Includes 90mm diameter primary H-Alpha etalon filter with sub 0.7 angstrom bandwidth and Blocking Filter
    FREE SHIPPING(48 States)
  3. Coronado - SolarMax II SME-90 double stack filter

    $2,399.00
    SKU: COR-SME-90

    Wait Time is 3-5 Days

    The Coronado SolarMax II SME-90 is a 90mm h-alpha double stack filter to provide additional detail when viewing the Sun with a Coronado SolarMax II 90mm filter or telescope. This is not a stand alone filter and must be paired with a Coronado primary h-alpha solar filter and blocking filter.
    FREE SHIPPING(48 States)
3 Item(s)
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Coronado has been developing ultra-narrowband filters and associated technologies for the professional market for over 40 years. Experience the Sun the Coronado way in the light of Hydrogen-Alpha (Ha) and open up a whole new world of astronomy! What's so interesting about Hydrogen-Alpha? The red light of H-Alpha with a wavelength of 656.3 nm (1 nm = 1 billionth of a meter) is a very prominent feature in the solar light spectrum since hydrogen makes up 75% by weight of the outer layers of the sun. This light shows us layers up to 1700 km above the sun's visible surface and is especially important for imaging the lower chromosphere.

The bright regions around sunspots, called plages, and brilliant solar flares are easily seen at this wavelength. Filaments, vivid string-like regions, and sunspots, large blotches on the solar surface, appear dark. Filaments on the solar limb appear bright against the blackness of space and are called prominences you have probably seen the stunningly beautiful images of. The Sun is active, ever changing, and constantly entertaining. See the Sun in a new light- the Coronado way!