Description
Unveiling the Dynamic Sun: Explore with the Coronado SolarMax II 90 Double Stack Solar Telescope w/BF15
Transcend Sunspots: Witness the Sun in Vivid Detail
Unlike ordinary white light solar filters, the Coronado SolarMax II 90 Telescope unlocks a universe of captivating solar phenomena in hydrogen-alpha (Hα) light. Witness the Sun’s dynamic features with unparalleled clarity:
- Erupting Prominences: Observe fiery tendrils of gas gracefully arcing from the solar limb.
- Explosive Flares: Capture the dramatic upheavals on the Sun’s surface.
- Subtle Granulation: Explore the intricate texture variations across our nearest star.
Sub-Angstrom Precision for Exceptional Views
The SolarMax II 90 boasts a sub-angstrom bandwidth filter centered on the crucial H-Alpha line (6562.8 angstroms). This translates to:
- Exceptional Image Resolution: Resolve the finest solar structures with remarkable sharpness.
- Superior Contrast: Achieve stunning contrast for both surface details and prominences, ensuring a captivating view.
- Thermal Stability: Maintain precise focus for uninterrupted observation sessions.
Full-Disk Views for Unrestricted Exploration
The integrated 15mm blocking filter features a clear aperture, guaranteeing unobstructed full-disk views of the Sun, ideal for:
- High-Resolution Visual Observation: Witness the Sun’s dynamic features in breathtaking detail.
- Superior Solar Imaging: Capture awe-inspiring solar imagery for further analysis and scientific exploration.
Powerful Yet Portable: Your Personal Solar Observatory
This high-quality 90mm refractor telescope boasts an impressive 800mm focal length and f/8.8 focal ratio. Despite its power, the SolarMax II 90 is surprisingly portable, allowing you to set up your solar observatory anywhere.

Ready to Explore?
The SolarMax II 90 comes equipped with all the essentials for immediate solar exploration:
- Mounting Rings: Seamless integration with your existing astronomical mount (sold separately).
- Cemax 25mm Eyepiece: Comfortable viewing experiences.
- Sol Ranger Solar Finder: Safe and accurate sun acquisition.
- Carrying Case: Convenient transportation and protection.
Safety First: ISO-Certified Design
Coronado prioritizes your safety. Each SolarMax II 90 undergoes rigorous testing in accredited laboratories to guarantee compliance with the stringent ISO 12312-2 safety standards for solar observation.
Specifications of Coronado SolarMax II 90 Double Stack Solar Telescope w/BF15
Feature | Details |
---|---|
Best for viewing | Solar |
User level | Advanced |
Optical design | Refractor |
Optical diameter | 90mm |
Focal length | 800mm |
Focal ratio | f/8.8 |
Coatings | Fully multi-coated |
Eyepieces | Cemax 25.0mm, 12.0mm (1.25″) |
Magnification with included eyepieces | 16x, 67x |
Resolving power | 1.28 arc*sec |
Lowest useful magnification | 13x |
Highest useful magnification | 180x |
Highest theoretical magnification | 180x |
Optical quality | Diffraction limited |
Finder scope | Sol Ranger |
Diagonal degrees | 1.25″ 90° Blocking Filter |
Mount type | Optical Tube without Mount |
T-max tuner | Yes |
Additional included accessories | Coronado CEMAX 12mm, 18mm, 25mm, & 2x Barlow Lens, Mounting rings, Sol Ranger finder scope, Travel C |
Other features | 0.5 angstrom bandpass |
Warranty | Five year |
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