Coronado SolarMax III 90 mm H-alpha Solar Telescope - 15 mm Blocking Filter - Double Stacked - 324012

Out of stock
SKU: COR-324012
Regular price $10,530.00 CAD

Product details

  • SKU COR-324012

Coronado SolarMax III 90 mm H-alpha Solar Telescope
- 15 mm Blocking Filter, Double Stacked

SolarMax III 90 mm H-alpha Solar Telescope - 15 mm Blocking Filter, Double Stacked - Features:

  • Fully Integrated 90 mm Aperture H-alpha Solar Telescope
  • 800 mm Focal Length - f/8.8
  • Includes Coronado’s patented RichView Tuning System
  • Sol Ranger Viewfinder
  • 15 mm Blocking Filter
  • Double Stacked Etalons for ultra narrow Bandpass
  • <0.5 Angstrom Hydrogen-alpha-line Bandpass
  • Included 12 mm, 18 mm, 25 mm CEMAX eyepieces, & CEMAX 2x Barlow
  • Enhanced rack & pinion Focuser
  • Vixen-style dovetail mounting rail
  • Black and gold hard carry case included to protect your investment

The SolarMax III is a 90 mm Aperture f/8.8 refractor solar telescope equipped with 90 mm external Hydrogen–alpha (H-α) filters. This telescope is a Double-stacked <0.5 Angstrom Hydrogen-alpha-line Bandpass with a 15 mm blocking filter.

The Coronado SolarMax III 90 mm H-alpha Solar Telescope has a new two-speed rack & pinion focuser which creates a more user-friendly interaction with the telescope. The two-speed, 2” focuser has both coarse and fine focus controls allowing the user to get a more precise focus, which is critical and helpful, for both solar imaging and visual observing.

Additionally, the SM3 90 mm includes only external “True” H-α etalon filters giving higher contrast views and sharper features compared with models using smaller internal H-α etalon designs. You will experience darker backgrounds, sharper features, and higher contrast with the new SolarMax III series telescope.

The SM3 90 mm 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 an overall better way of adjusting the filter's 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 favorite solar features without sacrificing image quality.

This Coronado Double Stacked model provides a <0.5 Angstrom bandpass. It includes two “True” external etalon filters. One etalon filter equipped with the patented RichView tuner and a second etalon with tip-tilt tuning using Coronado’s T-Max tuner. Whether you are focusing on the solar edge or surface features in the chromosphere, the SolarMax III 90 mm is the solar scope for you. Since both etalon filters are now external to the telescope, you can easily remove both filters and rear blocking filter diagonal to use the scope as a normal refractor for night time astronomy. It’s like having two scopes in one!

The new Coronado 90 mm SolarMax III series Double-Stacked telescope with enhanced rack & pinion focuser and large external etalons is now the perfect way to view the Sun! The SM3 90 mm comes with an included 12 mm, 18 mm, and a 25 mm CEMAX eyepieces, plus a CEMAX 2x Barlow lens. Also included in this telescope package are a Sol Ranger™ Solar Finder, a Vixen-style dovetail mounting rail, and an all-new black and gold Aluminum Hard Carry Case (Dimensions: 26.5" x 8.66" x 8.66") to protect your investment. Enjoy viewing the Sun as you never have before! This is serious solar observing.


  • Series: SolarMax III Solar Telescopes
  • Clear Aperture: 90 mm
  • Optical Design: Achromatic Refractor
  • Optical Coatings: Fully Multi-Coated
  • Focal Length: 800 mm
  • Focal Ratio: f/8.8
  • Viewfinder: Sol Ranger™
  • Eyepiece(s): Coronado CEMAX 12 mm, 18 mm, 25 mm
  • Barlow: CEMAX 2x Barlow Lens
  • Focuser Mechanism: 2" Rack and Pinion with (7:1) Fine Focus
  • Diagonal: 90 Degree Diagonal with Solar Filters - 15 mm Blocking Filter
  • Dovetail: Vixen-Style
  • Assembled Product Dimensions: 27.9" L x 6.2" W x 7.0" H
  • Assembled Product Weight: 17.47 lb