Double stack performance from a single etalon!
The very exciting Skywatcher Heliostar-76Ha is a safe solar telescope for the observation of active solar prominences and other solar details in the H-alpha band, boasting an exceptional performance of 0.5 Angstrom or better.
The Heliostar 76mm H-alpha solar telescope brings a new light to the Skywatcher family by offering a dedicated hydrogen-alpha (H-alpha) solar telescope to the lineup. Hydrogen-alpha solar observing allows you to unlock the incredible dynamics of the surface of the sun far beyond what a white light solar filter can deliver. From solar prominences on the limb of the sun (often mistakenly called "flares"), to active sunspot regions, bright plage patches, surface granulation, wispy, snake-like plasma filaments, and more, the star of the solar system is yours to capture in breathtaking views and images. When viewing the Sun in the narrow H-alpha bandwidth, the observer is rewarded with thrilling, awe-inspiring real-time views of our nearest star in it's full fiery majesty, seething with activity.
The Heliostar-76Ha uses multiple technologies to protect the human eye during solar observation, including an infrared thermal ray reflection film, a special filter to block heat, and a filter to block UV light from entering, blocking stray light that affects observation. It uses a combination of front and rear filters to allow only monochromatic light with a wavelength of 656.28 nanometres emitted by hydrogen atoms to pass through, whilst blocking other light of different wavelengths. This allows the observation of quite active prominences in the H-alpha band.
Skywatcher's solis etalon technology allows the Heliostar-76Ha to achieve a 0.5A bandpass without the costly expense and complexity of a second etalon to achieve the same performance. This allows the observer to obtain detailed images of the solar disk right out of the box without any further expense.
The Heliostar-76Ha conforms to and meets the transmission requirements of ISO 12312-2:2015 (filters for the direct observation of the sun). Always use in accordance with the instructions and exercise the utmost of caution when viewing the sun.
Features
- Magnification (with included eyepiece): 31.5×
- Eyepiece 1.25" 20mm, 70° wide angle
- Telescope focal length: 630mm f/8.3
- Clear aperture: 76mm
- Etalon bandwidth: <0.5 Angstrom
- Tuning method: Pressure tuning
- 11.5mm block filter
- 90° (1.25") solar zenith mirror
- Safe solar finder
- 2" dual-speed Crayford focuser
- Tube rings and 45mm Vixen style dovetail bar with 1/4 inch thread
- Universal smartphone adapter included
- Suitable for CCD photography with 1.25" adapter – backfocus 58mm or less
- Size of the solar image: 6mm
- Skywatcher SolarQuest Solar Go-To/Tracking mount recommended (optional)
- Safety Compliance Certification: ISO12312-2:2015
Delivery contents
- Heliostar-76Ha telescope tube
- 90° 1.25" star diagonal mirror with block filter
- 20mm 1.25" 70° wide-angle eyepiece
- Solar finder
- Tube clamps with dovetail bar
- Case
