The HELIOSTAR 100Hα is a premium 100mm hydrogen-alpha solar telescope designed for advanced solar observation and imaging, delivering high-contrast views with a ≤0.5Å bandpass. It reveals detailed solar features like prominences, filaments, and sunspots while using advanced filtering and safety systems for secure viewing.
Equipped with essential accessories and powered by Sky-Watcher’s Solis etalon technology, it offers exceptional performance right out of the box.
Sky-Watcher Heliostar 100mm H-alpha Solar Telescope
The HELIOSTAR 100Hα Solar Telescope is a premium 100mm hydrogen-alpha (H-alpha) solar telescope engineered for serious solar observers and astrophotography enthusiasts. Delivering an exceptional ≤0.5 Angstrom bandpass, this high-performance solar scope reveals extraordinary detail across the Sun’s surface, making it ideal for both visual observation and solar imaging.
Designed as a complete solar observing system, the HELIOSTAR 100Hα includes a 22mm 70° wide-angle eyepiece, solar zenith prism, and solar guider, everything you need to begin capturing stunning solar views right out of the box.
Experience the Sun in Hydrogen-Alpha Detail
Hydrogen-alpha solar observing unlocks dynamic features of the Sun that are completely invisible with standard white light solar filters. With the HELIOSTAR 100Hα, you can observe:
Dramatic solar prominences extending from the Sun’s limb
Active sunspot regions and evolving solar activity
Bright plage areas surrounding sunspots
Intricate surface granulation and chromospheric texture
Flowing solar filaments and plasma structures
This narrowband H-alpha solar telescope isolates light at 656.28 nanometers, allowing you to experience the Sun as a constantly shifting, highly active star in stunning real-time detail.
Advanced Solar Safety & Optical Performance
The HELIOSTAR-100Hα incorporates multiple layers of solar protection and precision filtering to ensure safe and high-contrast viewing:
Infrared (IR) thermal reflection film to reduce heat buildup
UV and heat-blocking filters for eye safety
Stray light suppression for improved contrast
Front and rear filtering system for precise wavelength isolation
Only monochromatic hydrogen-alpha light passes through the system, ensuring optimal visibility of solar activity while maintaining strict safety standards.
Solis Etalon Technology – High Performance Without Complexity
Powered by Sky-Watcher’s advanced Solis etalon technology, the HELIOSTAR 100Hα achieves a 0.5Å bandpass without requiring a dual etalon system. This innovation reduces cost and complexity while still delivering high-contrast, detailed views of the solar disk, perfect for observers who want premium performance without additional upgrades.
Certified for Safe Solar Observation
The HELIOSTAR-100Hα meets the ISO 12312-2:2015 international safety standard for direct solar observation. Always follow proper solar viewing guidelines and use the telescope as instructed to ensure safe operation.
The HELIOSTAR 100Hα is a premium 100mm hydrogen-alpha solar telescope designed for advanced solar observing and imaging. With a ≤0.5 Angstrom bandpass, it reveals stunning chromospheric detail: solar prominences, filaments, and sunspots, in high contrast and real time, far beyond what white light filters can show.
Powered by Sky-Watcher’s Solis etalon technology, it delivers exceptional performance without the complexity of a dual etalon system. Built with advanced safety filters and meeting ISO 12312-2:2015 standards, this complete, ready-to-use solar telescope is ideal for both serious astronomers and newcomers looking to explore the Sun in incredible detail.
