Coronado - SolarMax III 90 Solar Telescope with Richview System and 15mm Blocking Filter
The Coronado SolarMax III brings velvety black backgrounds and higher contrast to solar observing thanks to enhanced RichView tuning. The Coronado SolarMax III 90mm telescope features a full 90mm etalon with direct tuning of the primary etalon filter for a greater tuning range and improved bandpass adjustment over previous generations. With a 15mm blocking filter and case, this H-Alpha solar telescope offers the best tuning adjustment on the market today.
Coronado SolarMax III 90 Solar Telescope with Richview System and 15mm Blocking Filter
- The Coronado SolarMax III 90 with BF15 blocking filter has the same renowned solar observation components and results as the SolarMax II, but with enhanced 2" RP dual speed 10:1 focusing and a step forward in contrast and resolution with the 90mm external H-alpha filter. This improves dark vs light contrast between Sun and background.
- Includes Coronado's patented Richfield tuning for front Etalon adjustment.
- Includes 15mm BF15 blocking filter. Other blocking filter sizes are available to be purchased separately.
- The SolarMax III 90 has a 800mm focal length and focal ratio of f/8.9.
- Thermal Stability: 0.005 Å/°C
Coronado SolarMax III Enhancements
Meade has redesigned their Coronado SolarMax telescopes. The SolarMax III series includes an improved 2" dual speed rack and pinion focuser for smoother focus control and accurate focus adjustment for both observing and imaging. The true stand out feature of the SolarMax III 90mm telescopes is their 90mm external H-Alpha filter for improved contrast and sharper features than the telescopes with smaller etalons. The result is darker backgrounds and heightened detail on the Sun's surface and more prominently visible edge details like solar flares.
The 90mm SolarMax III is an f/8.9 dedicated h-alpha solar telescope with a 90mm external etalon and enhanced RichView tuning for an increased bandpass adjustment range. This high precision form of tuning provides velvety black backgrounds, tack sharp image resolution and increased precision in tuning when compared to previous generations.
BF15 15mm Blocking Filter
This configuration of the SolarMax III 90 Solar Telescope comes with the BF15 15mm blocking filter which is the second equation to the solar telescope. While the initial front filter has a bandpass centered on the H-Alpha line, the blocking filter further removes any other wavelengths with the exception of the H-alpha emission line so the view of the Sun is purely H-Alpha wavelengths where a majority of activity can be seen.
There are other blocking filter sizes that come with this telescope or can be purchased separately. Depending on whether the user is doing visual or imaging, the focal length of the telescope or sensor size of the camera (APS-C vs Full Frame) will depend on the proper blocking filter size that is needed.
Coronado's Richfield Tuning
With Coronado's patented Richfield Tuning system, the user can adjust tuning of the front etalon filter for either high contrast views such as flares, sunspots etc to a lower prominence tuning.
Standard 5 year manufacturer warranty from date of purchase.
|Free Shipping Available
|2" Rack and Pinion with (7:1) Fine Focus
|Focal Length of Eyepiece 1
|Focal Length of Eyepiece 2
|Focal Length of Eyepiece 3
|90 Degree Diagonal with Solar Filters- 15mm Blocking Filter
|Highest Useful Magnification
|Lowest Useful Magnification
|Limiting Stellar Magnitude
|Optical Tube Diameter
|In The Box
- Coronado SolarMax III 90 Optical Tube Assembly with BF15 Blocking Filter
- Cemax 25mm, 18mm, 12mm eyepieces
- 2x Barlow
- Sol ranger finderscope
- V-Style dovetail bar