Coronado Instrument, now owned by Meade, is one of the world’s leading manufacturers of high quality hydrogen-alpha filters and dedicated solar telescopes, as well as related accessories.
Solar enthusiasts are extremely satisfied with Coronado Solar telescopes. Coronado Personal Solar Telescope (PST) is excellent for the amateur. Their H-alpha system is affordable and easy to use. Serious solar observers and professionals use the Coronado SolarMax II Telescopes. The Solarmax II Telescopes are available in several different models. The Coronado SolarMax II 60 is a 60mm personal solar observatory featuring a 400mm focal length, f/6.6 focal ratio. The Coronado SolarMax II 90 is a 90mm personal solar observatory featuring a 800mm focal length, f/8.8 focal ratio. Coronado also offers SolarMax II Double Stack models. These models have an add-on filter that reduces the normal bandwidth of a SolarMax telescope, which increases visibility of surface detail and active regions on the solar disc.
Most telescopes will require a Coronado built adaptor plate in order to secure the MaxScope series filter to the objective cell. These plates are built by Coronado for most telescope up to 16” in diameter. We have a standard list comprising of over 100 of the most popular models including Meade, Celestron. Takahashi, Astro Physics, Borg, Orion, and TeleVue telescopes.
The 30mm Blocking Filter is the secondary interference filter for a full disc image with telescopes up to 3000mm in focal length. The Blocking Filter is not a stand alone filter. It is an integral part of the Coronado design and cannot be used without a SolarMax series filter on the front of the optical system.
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. If you are switching to a longer focal length telescope your SolarMax system you can purchase blocking filters separately. The BF-10 to be used on telescopes with a focal length <1000mm. The blocking filter is not a stand alone filter.
The 5mm BF-15 is to be used on telescopes with a focal length up to 500mm. The Blocking Filter is not a stand alone filter. It is an integral part of the Coronado design and cannot be used without a SolarMax series filter on the front of the optical system.
CEMAX Complete Set of Contrast Enhanced eyepieces and barlow. Includes all products pictured here, 12mm, 18mm and 25mm eyepieces, plus 2x barlow. Specially designed and coated for optimizing H-alpha viewing.