Coronado SolarMax III 90mm Telescope with BF30

£7,198.00✓ 5 year warranty


Out of stock due 30-40 working days

About this product

Model:  coro_sm_iii_90_bf30
Part Number:  324013

Coronado SolarMax III 90mm Solar Telescope With Richview System & 30mm Blocking Filter.

The SolarMax III is a 90mm f/8.9 refractor with a 90mm external hydrogen-alpha (Ha) filter.  This single-stacked (<0.7Å) option has a 30mm blocking filter.

The SM3 90mm has a new two-speed rack & pinion focuser, creating a more user-friendly interaction with the telescope. The two-speed, 2” focuser has coarse and fine focus controls allowing you to get a more precise focus, which is critical for solar imaging and visual observing.

Additionally, the SM3 90mm includes only external “True” Ha etalon filters giving higher contrast views and sharper features compared with models using smaller internal Ha etalon designs. Experience darker backgrounds, sharper features, and higher contrast with the new SolarMax III telescope.

The SM3 90mm also includes Coronado’s patented RichView tuning, allowing direct tuning of the primary etalon filter. The patented RichView tuning technology provides additional tuning range and a better way of adjusting the filter bandpass. No other commercially available H-α telescope can provide the tuning range and accuracy of the new SolarMax III telescope. Now you can tune for the highest contrast views of your favourite solar features without sacrificing image quality.

The new Coronado 90mm SolarMax III telescope with enhanced rack & pinion focuser and large external etalon(s) are now the perfect way to view the Sun! The SM3 90mm comes with an included 12mm, 18mm, and 25mm CEMAX eyepieces, CEMAX 2x Barlow, Sol Ranger™ Solar Finder, Vixen-style dovetail mounting rail, and an all-new black and gold Aluminium Hard Carry Case (Dimensions: 67cm x 22cm x 22cm / 26.5" x 8.66" x 8.66").


  • Fully Integrated 90mm H-alpha Telescope
  • 800mm Focal Length - f/8.9
  • Includes Coronado’s patented RichView Tuning System
  • Sol Ranger Viewfinder
  • 30mm Blocking Filter
  • <0.7Å Bandpass
  • Black and Gold Hard Carry Case Included to protect your investment
  • Five-year manufacturers warranty

Product Videos

What's in the box

  • Coronado SolarMax III 90mm Ha Telescope
  • Sol Ranger Solar Finder
  • CEMAX 12mm, 18mm & 25mm Eyepieces
  • CEMAX 2x Barlow
  • Vixen-style Dovetail
  • Aluminium Carry Case


Series SolarMax III Solar Telescopes
Clear Aperture 90mm
Optical Design Achromatic Refractor
Optical Coatings Fully Multi-Coated
Focal Length 800mm
Focal Ratio f/8.9
Viewfinder Sol Ranger™
Eyepiece(s) Coronado CEMAX 12mm, 18mm, 25mm
Barlow CEMAX 2x Barlow
Focuser Mechanism 2" Rack and Pinion with (7:1) Fine Focus
Diagonal 90 Degree Diagonal with Solar Filters - 15mm Blocking Filter
Dovetail Vixen-Style
Assembled Product Dimensions 708mm L x 157mm W x 178mm H / 27.9" L x 6.2" W x 7.0" H with CEMAX eyepiece
Assembled Product Weight 7.9 kg / 17.47 lbs. - with CEMAX eyepiece

Downloads / Manuals

The following manuals and downloads are available for this product:


Coronado SolarMax III 90mm Manual


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