Coronado - SolarMax II 60 Double Stack Telescope with BF5 Blocking Filter with RichView Tuning

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Coronado SolarMax II 60mm Double Stacked Filter Telescope With BF5 (5mm) Blocking Filter and Richview Tuning SystemThe Coronado SolarMax II is a premier Telescope for hydrogen-alpha  (Ha) solar observation

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Product Description

Coronado - SolarMax II - 60mm Dedicated H-alpha Solar Telescope - Double Stacked & BF-5 Blocking Filter

  • Double stacked etalon filter system delivers superb contrast and detailed resolution at <0.5 Å @ 656nm      
  • RichView tuning for higher contrast views of active regions, flares, filaments and other surface features
  • BF-5 (5mm) Blocking Filter in a 1.25" Diagonal w/ Cemax 25mm Plossl Eyepiece included
  • SolarMax 60 H-Alpha internal etalon used alone for <0.7 Å bandpass
  • <0.5 Å when double stacked with the front mounted T-Max etalon for more detailed, higher contrasted solar views
  • Sol Ranger Finderscope ensures a safe, rapid and accurate alignment process with the Sun
  • 400mm Focal length, f/6.6 focal ratio - ideal for safe solar viewing*

The SolarMax II 60 Double Stack Telescope from Coronado features the RichView tuning method which allows direct adjustment of the primary etalon filter. With RichView, the scope can be tuned for more precise wavelengths of light in the hydrogen-alpha (Ha) band. This allows for higher contrast views of active regions, flares, filaments and other surface features. It can be quickly re-tuned for prominences on the solar limb.

The SolarMax II 60 Double Stack is a dedicated H-Alpha solar viewing telescope with a 60mm SolarMax filter, a T-Max 60 tuner,  BF-5 blocking filter, and a Cemax 25mm eyepiece. The 60mm aperture is double stacked with one internal etalon filter and one external etalon filter for a bandwidth of <0.5 Å. The double stacked SolarMax II filter system delivers superb contrast and detailed resolution. By combining two SolarMax II filters, fine-tuned individually with the RichView tuning system, the bandwidth is reduced from <0.7Å to <0.5Å. The effect of the narrower bandpass is greatly increased contrast on the surface of the Sun, bringing out details in active regions, filaments, flares and other surface phenomenon. The telescope can be used without the external etalon filter attached thereby increasing the bandwidth to <0.7 Å.

The heart of the SolarMax II 60 Double Stack's viewing system is the SolarMax 60 filter and it's matching T-Max 60 Doppler Tuning Unit. This combination (left) can be selectively adjusted by the viewer to de-tune the telescope's optical system. The wavelengths produced by high-velocity events such as active flares and coronal mass ejections (CME) can Doppler-shift and become invisible to a fixed H-Alpha system. The slight adjustment range made possible by the T-Max 60 allows these phenomena to become more visible.

*All SolarMax filters must be used with a secondary interference filter. This package includes a BF-5 blocking filter (right) in a 1.25" right-angle diagonal that produces a 4.6mm image. The BF-5 is thermally stable, so the image will not drift off the H-Alpha line as it heats up during use. Its 5mm aperture is matched to the telescope's focal length for full disk views of the Sun. This large aperture also enables the use of most Barlow lenses - this simplifies digital photography and enables the use of binoviewers.



Name Coronado - SolarMax II 60 Double Stack Telescope with BF5 Blocking Filter with RichView Tuning
Manufacturer Coronado
Model COR-SMT60DS-5
UPC 709942996241
Telescope Aperture 3" and Under
Aperture 60mm (2.4")
Bandwidth <0.07angstroms (<0.05angstroms double stacked)
Eyepieces Cemax 25mm Plossl
Eyepiece 1 Magnification 16x
Focal Length 400mm
Focal Ratio f/6.6
Focuser helical
Optical Coatings multi-coated
Resolution (Dawes) 1.93 arc seconds
Star Diagonal 1.25" rt angle w/blocking filter
Warranty 1 yr


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