Coronado SolarMax 40mm Ha Filter w/TMax Tuner and 10mm BF

SolarMax 40 - 40mm aperture narrowband Ha Filter with TMax Tuner and 10mm blocking filter. Maximized for telescopes up to 1000mm

The SolarMax 40 system allows for full H-A views of the sun. This highly portable system will work on almost any telescope when attached with an adaptor plate. Adaptor plates are priced separately in accessories. It is sold with a companion T-Max tuner and 5 mm blocking filter. The blocking filter is housed in a 1.25" diagonal. This combination allows for a full disc image at a focal length up to 500mm. For owners of longer focal length telescopes the SolarMax 40 is available with larger blocking filters to accommodate up to 3000mm in focal length.

The T-Max above in combination with SolarMax 40 & attached to a MAXSCOPE is shown prior to anodising; all finished T-Max tuners are matte black.

The Advantage of the T-Max:

Some events on the Sun, notably active flares and coronal mass ejections (CMEs), 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. If the velocity is high enough, this wavelength could be outside the passband of the filter and the feature would not be observable. The T-Max allows the user to de-tune the SolarMax slightly to bring such phenomena into better visibility. The T-Max fits between the SolarMax and its adaptor plate. A simple rotary wheel movement accomplishes the tilt necessary to move the passband of the filter. Because of the filter's position at the front end of the telescope, this does not compromise the performance of the filter nor limit the Ha field of view as is the case with rear mounted filters. Users of the TMAX describe its enhancement of their Solar observing; Bill Falcone writes:

"What a great accessory. I am now able to tune the filter for astonishing detail of prominences as they fly off the sun. To me this is a must have item."

SolarMax 40 can also be paired with a second SolarMax 40, second T-Max and an interface adaptor. This will reduce the bandwidth of the 40mm filter system to <0.5A and will greatly increase the contrast of the image. This addition is priced at $1,070.00. We recommend this configuration with the Coronado MaxScope due to the optimal design of this telescope allowing effective use of a double filter system. However, double stacking can be done on just about any telescope.

Product Specifications

Bandwidth: <0.7A

Supplier Sku:

SM40/10

What's Included:

Ha filter

Shipping Restrictions:

Available for shipment to the USA and Canada only.