Coronado SolarMax Filter 90 (for focal lengths 1000mm or less)

Manufactured by: Coronado
Model: SM90-10


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Coronado SolarMax Filter 90
Coronado SolarMax 90 H-Alpha Filter System with BF10 & T-Max Tuner - 90mm of clear aperture, with a wavelength of 6562.8A in H-alpha and a bandwidth of <0.7A. Threaded to fit directly on the TeleVue NP-101, TV 101 or 102, and Genesis SDF, but will work with other scopes with suitable adapter plate (sold separately). This package comes with a
BF10 blocking filter, which is optimized for scopes with a focal length of 1000mm or less.

Like the smaller 60mm filter the SolarMax 90 can be used on almost any telescope design under 3000mm focal length. However, the larger 90mm aperture increases resolution and allows for the user to view individual sections of solar activity at high magnification and when viewing at full disk the user gets the impression of curvature on the surface. The extra resolution will provide some stunning views; you haven't seen the sun until you have looked 'down' through a filament onto an active region.

The front mounted SolarMax and rear blocking filter. Almost all telescopes will require an adaptor plate in order to attach the SolarMax, these are available from Coronado or through your dealer. The SolarMax includes a T-Max de-tuning filter. Some events on the Sun,- notably active flares and coronal mass ejections (CME), are extremely fast moving. If such features occur on the disc of the Sun, their high velocity towards the observer results in their wavelength being Doppler shifted shorter than Ha.

Product Specifications

Thermal Stability:0.005 /C
Safety Blocking:>10-5 from EUV/IR

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