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Note: As of July 2024, Coronado has apparently ceased operations along with Meade. Enjoy savings on our remaining stock of Coronado scopes. We offer an extended 90 day guarantee on these instruments; there is likely no warranty support from Coronado.
- 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
Introducing Meade’s 90mm SolarMax III (SM3) Hydrogen– alpha solar telescopes!
The SolarMax III is a 90mm f/8.9 refractor equipped with 90mm external hydrogen – alpha (H-α) filters. Available in both single-stacked (<0.7Å) and double-stacked (<0.5Å) bandpasses and either 15mm or 30mm blocking filters. What makes the SM3 standout?
The SM3 90mm 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, critical for both solar imaging and visual observing.
Additionally, the SM3 90mm includes only external “True” H-α etalon filter giving higher contrast views and sharper features compared with models using smaller internal H-α etalon designs. Experience darker backgrounds, sharper features, and higher contrast with the new SolarMax III series 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 an overall better way of adjusting the filters 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.
Double Stacked models (<0.5Å bandpass) include two “True” external etalon filters. One etalon filter equipped with our patented RichView tuner and 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 90mm 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 90mm SolarMax III series 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, 25mm CEMAX eyepieces, CEMAX 2x Barlow, Sol Ranger™ Solar Finder, 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").
| 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- 30mm Blocking Filter |
| Dovetail | Vixen-Style |
| Assembled Product Dimensions | 27.9" L x 6.2" W x 7.0" H (708mm x 157mm x 178mm) - with CEMAX eyepiece |
| Assembled Product Weight | 17.47 lbs. - with CEMAX eyepiece |
Scope Won't Come to Focus
To achieve focus, the scope has a built-in extension that must be extended. Loosen the two black screws pointed to in the image below, located above the focuser assembly. Once the screws are loosened by about 1 turn, pull the focuser assembly away from the main tube to reveal the extension. It will pull out approximately 6", and should be fully extended. Once extended, re-tighten the black thumb screws.
