Heliostar 76 Hα — dedicated hydrogen-alpha solar telescope The Heliostar 76 is a dedicated 76 mm hydrogen-alpha solar telescope with a 630 mm focal length and a bandpass below 0.5 Å. It is designed to reveal prominences and solar hydrogen-alpha detail using its integrated filtering system.
Manufacturer model: Heliostar 76 Hα — dedicated hydrogen-alpha solar telescope · Specifications checked against manufacturer data on 2026-11-04
The Heliostar 76 is a dedicated 76 mm hydrogen-alpha solar telescope with a 630 mm focal length and a bandpass below 0.5 Å. It is designed to reveal prominences and solar hydrogen-alpha detail using its integrated filtering system.
The 76 mm model has a 630 mm f/8.3 optical system. The manual lists a dedicated solar zenith prism, a 20 mm 70° wide-angle eyepiece and a smartphone adapter. Allow more than 30 minutes for the telescope and etalon chamber to reach outdoor temperature before observing.
The OTA weighs 3.8 kg and measures 590 mm according to the manual. Its solar guider provides aiming assistance; tune and focus using the manufacturer’s operating procedure.
Observe only with the complete, undamaged original solar-filter system and its dedicated solar diagonal fitted as instructed. Replacing the solar diagonal with an ordinary star diagonal removes essential filtering. Read the manufacturer’s solar operating instructions before use.
Sky-Watcher manufacturer documentation
Sky-Watcher solar product page
Manual gives 590 mm length; the web table rounds to 600 mm. Manual configuration retained.
| Bandpass angstrom | Less than 0.5 |
|---|---|
| Observing line (nm) | 656.28 |
| Solar image diameter (mm) | 6 |
| Solar diagonal | Dedicated solar zenith prism/blocking-filter assembly; essential to complete filtering system |
| Safe configuration | Use only the complete original solar-filter system; never substitute an ordinary star diagonal |
| Included accessories | Solar zenith prism; 20 mm eyepiece; smartphone adapter; 2.5 mm and 5 mm Allen keys |
| Thermal equilibration | More than 30 minutes outdoors before each use |
Ficha técnica
Heliostar 76 Hα — dedicated hydrogen-alpha solar telescope The Heliostar 76 is a dedicated 76 mm hydrogen-alpha solar telescope with a 630 mm focal length and a bandpass below 0.5 Å. It is designed to reveal prominences and solar hydrogen-alpha detail using its integrated filtering system.
Manufacturer model: Heliostar 76 Hα — dedicated hydrogen-alpha solar telescope · Specifications checked against manufacturer data on 2026-11-04
