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Coronado SolarMax III 90 Double Stack Solar Scope with BF30
AED 47,100.00
The Coronado SolarMax III 90 Double Stack Solar Scope with BF30, a flagship model in the Coronado solar telescope series, is specifically designed for observing stunning high-contrast hydrogen-alpha details of solar prominences, sunspots, active flare regions, and surface granulation. Let’s break down its key features:
- RichView Tuning System: The SolarMax III incorporates Coronado’s patented RichView tuning technology. Paired with the T-Max Tuner, this system maximizes contrast and detail when observing solar features.
- Optical Components:
- BF30 Straight-Through 2″ Blocking Filter: This filter ensures the largest unvignetted view of the Coronado BF series. It also provides a straight-through optical path, making it ideal for large sensor camera models.
- 1.25″ Diagonal: The diagonal allows for a straight-through optical path, further enhancing the unvignetted view.
- Double Stack Etalons: The SolarMax III employs a double-stack system (two stacked etalons) with a bandpass of less than 0.5 Angstroms. This results in even higher surface contrast and detail compared to a single-stack system (with a bandpass of less than 0.7 A).
- Included Accessories:
- CEMAX Eyepieces: Three CEMAX eyepieces are included for versatile observation.
- 2x Barlow Lens: Enhance magnification with the 2x Barlow lens.
- Sol Ranger Viewfinder: Quickly align with the sun using the Sol Ranger.
Hard Carry Case: Safely protect your investment with the included hard carry case.
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Description
Coronado SolarMax III 90 Double Stack Solar Scope with BF30: Unveiling the Sun’s Secrets
The Coronado SolarMax III 90mm refractor stands as the pinnacle of solar telescopes, offering unparalleled views of our nearest star—the Sun. Whether you’re a seasoned astronomer or a curious backyard observer, this lightweight and compact telescope allows you to explore the Sun’s dynamic features with remarkable clarity. Let’s delve into its remarkable features:
- Double Stacked Etalons: At the heart of the SolarMax III 90mm lies a double-stacked system comprising two front external 90mm air-spaced etalons. These etalons reveal the most captivating part of the solar spectrum: Hydrogen-alpha light (6562.8 Angstroms). With an ultra-narrow bandpass of less than 0.5 Angstroms (Å), the contrast is exceptional. Witness prominences spilling off the solar disk, intricate surface granulation, sunspots, filaments, and active flare regions in unprecedented detail.
- Resolution Enhancement: Compared to the single-stack version, the double-stack 90mm system provides enhanced resolution. Even at higher magnifications, you’ll notice additional details that make your solar observations truly remarkable.
- Safety First: The 2″ 30mm blocking filter (BF30) ensures safe solar viewing. Positioned between the 1.25″ diagonal and the telescope focuser, it incorporates multiple internal filters, including the Induced Transmission Filter (ITF), Blue Glass Filter (BG38), and H-a cut-off filter. The BF30 offers the largest unvignetted field among Coronado telescopes, making it ideal for imaging with larger camera sensors.
- Straight-Through Design: Unlike its counterparts (BF10 and BF15), the BF30 is a straight-through design located in front of the diagonal. This convenience allows easy attachment of DSLRs and dedicated astro cameras.
- RichView Tuning Technology: Fine-tune the solar image using Coronado’s patented RichView tuning system. Adjust the distance between the parallel glass plates of the external etalon to achieve the perfect wavelength bandpass. Combined with the T-Max Tuner, you’ll experience unparalleled solar detail.
- Complete Package: The SolarMax III 90mm includes an 800mm focal length (f/8.9) refractor doublet lens with a 90mm aperture. It comes with a 1.25″ diagonal, CEMAX eyepieces, and a Sol Ranger Solar Finder. The sturdy hard carry case ensures protection during your solar adventures.
Coronado’s SolarMax III telescope utilizes patented RichView tuning technology to optimize solar image contrast. By adjusting the distance between parallel glass plates in the external etalon, the perfect wavelength bandpass is achieved for observing solar features while maintaining precise optical alignment. This technology also extends the etalon tuning range and enables high-altitude use.
The RichView system enhances control over the H-alpha bandpass window. Additionally, the built-in T-Max Tuner allows fine-tuning of the brightest image and eliminates reflections. Together, RichView and T-Max provide unparalleled image tuning for optimal solar detail observation.
The SolarMax III 90mm telescope features a backlash-free 2″ dual-speed rack & pinion focuser with both coarse and fine focus adjustments (10:1 reduction). It includes a Sol Ranger Solar Finder for easy sun alignment. Standard optical accessories comprise 25mm, 18mm, and 12mm CEMAX eyepieces, a CEMAX 2x 1.25″ Barlow, and a 1.25″ diagonal that attaches directly to the BF30. The package also includes a 2″ visual back, a 2″-1.25″ zero-length adapter, a Vixen-style dovetail mounting rail, and a black and silver aluminum hard carry case (dimensions: 26.5″ x 8.66″ x 8.66″).
Coronado ensures that all solar filters and telescopes undergo testing at accredited labs to comply with ISO 12312-2 safety specifications for solar viewing.
Explore the Sun’s intricate features with the Coronado SolarMax III 90mm refractor. From fiery prominences to delicate filaments, every observation becomes a celestial journey!
Specifications of the Coronado SolarMax III 90 Double Stack Solar Scope with BF30
| Best for viewing | Solar |
| User level | Advanced |
| Optical design | Refractor |
| Optical diameter | 90mm |
| Focal length | 800mm |
| Focal ratio | f/8.9 |
| Coatings | Fully multi-coated |
| Eyepieces | Cemax 25.0mm (1.25″) |
| Magnification with included eyepieces | 32x, 67x |
| Resolving power | 1.28 arc*sec |
| Lowest useful magnification | 13x |
| Highest useful magnification | 180x |
| Highest theoretical magnification | 180x |
| Limiting stellar magnitude | 12.4 |
| Optical quality | Diffraction limited |
| Finder scope | Sol Ranger |
| Focuser | 2″ dual-speed Rack-and-pinion |
| Diagonal degrees | 1.25″ 90° Mirror Star |
| Mount type | Optical Tube without Mount |
| Tube material | Aluminum |
| T-max tuner | Yes |
| Additional included accessories | 12mm, 18mm, 25mm CEMAX eyepieces, CEMAX 2x Barlow, BF30 blocking filter and 1.25″ star diagonal, Vix |
| Other features | Double-stacked etalons for 0.5 angstrom bandpass, Dual-speed focuser |
| Warranty | Five year |
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