Coronado - SolarMax II 90 Telescope with BF15 Blocking Filter with RichView Tuning

SKU
COR-SMT90-15
Special Price $2,999.99 Regular Price $4,449.99
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For observers who want to view the ever and daily changing activity of the Sun, the Coronado's SolarMax II 90 provides the steadfast details that are not visible using traditional white light solar filters or telescopes.

Coronado - SolarMax II 90 Telescope with BF15 Blocking Filter with RichView Tuning

Features

  • The Coronado SolarMax II 90 has a 800mm focal length and an f/8.8 focal ratio.
  • Includes 15mm blocking filter.
  • Takes solar viewing and imaging many steps further than traditional white light, making solar prominence and other details more within reach!
  • The front etalon has an extremely narrow 0.07nm bandpass (or <0.7 Angstroms) centered on the H-Alpha emission line at 656.28nm.
  • The optical design and filters are thermally stable, thus heat does not reduce or affect spectral quality.
  • Built with Coronado's RichField tuning.

Incredible Solar Details With SolarMax II Bandpass

For observers who want to view the ever and daily changing activity of the Sun, the Coronado's SolarMax II 90 provides the steadfast details that are not visible using traditional white light solar filters or telescopes. The solar filter installed on the top of the optical tube has an extremely narrow bandpass of <0.7 angstroms (0.07 nanometers) centered on the H-Alpha line 656.28 nanometers, therefore significantly more activity and details become apparent on the Sun's surface as well as sunspot and flare prominence. Better yet, the filter is thermally stable, so a buildup of heat during observation will not affect performance or change the H-alpha bandpass.

BF15 15mm Blocking Filter

This configuration of the SolarMax II 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. 

Warranty

Standard 5 year manufacturer warranty from date of purchase.

More Information
UPC 709942996302
Brand Coronado
Free Shipping Free Shipping Available
Aperture 90mm
Case Included Yes
Focal Length 800mm
Focal Ratio 8.8
Focal Length of Eyepiece 1 12mm
Focal Length of Eyepiece 2 18mm
Focal Length of Eyepiece 3 25mm
Finderscope Included Sol Ranger
Diagonal Included 1.25" 90° Blocking Filter
Optical Tube Material Aluminum
Highest Useful Magnification 180x
Lowest Useful Magnification 13x
Limiting Stellar Magnitude 12.5
Optical Coatings Fully Multi-Coated
Warranty 5 Years
In The Box
  • Coronado SolarMax II 90 Telescope with BF15 Blocking Filter
  • Coronado Cemax 12mm, 18mm, 25mm eyepieces
  • 2x Barlow Lens
  • Mounting rings
  • Sol ranger finder scope
  • Case
  • Coronado SolarMax II 90 Telescope with BF15 Blocking Filter
  • Coronado Cemax 12mm, 18mm, 25mm eyepieces
  • 2x Barlow Lens
  • Mounting rings
  • Sol ranger finder scope
  • Case
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