Sky-Watcher Heliostar 100Hα Solar Telescope S11325

• Bring the Sun to life with the Sky-Watcher Heliostar 100Hα Solar Telescope, a dedicated Hydrogen-alpha solar scope designed for high-contrast solar viewing and imaging.
• Enjoy double stack-style performance at a single stack price, with native narrow bandpass performance for rich chromosphere detail without the cost and light loss of a traditional double-etalon setup.
• The large 100mm aperture and 760mm focal length deliver crisp, high-resolution views of prominences, filaments, spicules, plage, sunspot activity, solar flares, and surface texture.
• Built with Sky-Watcher’s Solis Etalon Technology and Integrated Trifid Tuner, this telescope offers precise H-alpha tuning for detailed solar observing right out of the case.
• The H-alpha fully multicoated achromatic doublet optics are optimized specifically for solar work, giving observers a dedicated instrument for safe and exciting views of the Sun.
• A built-in Heliostar solar finder, tube rings, carry handle, V-style dovetail, and clip-on Sun shade make setup smooth, portable, and observing-friendly.
• The included 20mm 1.25-inch H-alpha blocking diagonal is part of the telescope’s safety system and is designed specifically for use with the Heliostar.
• As the official solar telescope of the Charlie Bates Solar Astronomy Project, the Heliostar 100Hα is built for serious outreach, education, imaging, and visual solar astronomy.
• Lab tested in the United States to meet ISO 12312-2 solar safety standards, with each telescope tested on the actual Sun before use.
• Please note: this is a dedicated solar telescope and is intended only for viewing and imaging the Sun.

Specifications

• SKU: S11325
• UPC: 810098970747
• Optical Design: Achromatic doublet
• Lens Coating: H-alpha fully multicoated
• Optical Quality: Diffraction limited, 1/4 wave
• Aperture: 100mm
• Focal Length: 760mm
• Focal Ratio: f/7.6
• Bandpass: Less than 0.55Å
• Blocking Filter Size: 20mm
• Solar Image Size: 7.6mm
• Focuser: 2.8-inch dual-speed rack and pinion focuser
• Diagonal Format: 20mm, 1.25-inch H-alpha blocking diagonal
• OTA Material: Aluminum
• Optical Tube Length: 30 inches
• Optical Tube Weight: 13.2 lbs
• Mounting Rings: Included
• Dovetail: V-style
• Included Eyepiece: 22mm 70° 1.25-inch eyepiece
• Included Finder: Integrated Heliostar solar finder
• Minimum Magnification: 14x
• Maximum Magnification: 197x
• Magnification with Included Eyepiece: 35x
• Dawes Limit: 1.16
• Rayleigh Limit: 1.4
• Limiting Magnitude: 12.48
• Intended Use: Solar visual observing and imaging

What's in the Box?

• Sky-Watcher Heliostar 100Hα optical tube assembly
• Mounting rings
• V-style dovetail
• Integrated Heliostar solar finder
• Clip-on Sun shade
• 22mm 70° 1.25-inch eyepiece
• 20mm 1.25-inch H-alpha blocking diagonal
• 2-inch eyepiece adapter
• Hard-shell carrying case