The Sky-Watcher HELIOSTAR-76Ha (SW-3503) solar telescope is a safe device for observing solar prominences and other solar surface details in the H-alpha band. It offers exceptional performance below 0.5 angstroms, comparable to Double-Stack modules.
By observing the Sun in the narrow H-alpha band, the user can enjoy dynamic views of our nearest star: solar flares, prominences, spicules, granulation, sunspots, and other phenomena.
HELIOSTAR-76Ha uses a filter system that reduces thermal radiation, UV and scattered light, and thanks to the combination of front and rear filters, it only allows through light with a wavelength of 656.28 nm, characteristic of hydrogen.
Sky-Watcher Solis Etalon technology enables <0.5Å throughput without the need for additional etalons, making it ready to observe straight out of the box.
The telescope complies with the requirements of the ISO 12312-2:2015 standard for filters for direct solar observation. Always exercise extreme caution during observations and follow the operating instructions.
• advanced H-alpha filter with bandwidth <0.5Å
• Solis Etalon technology without the need for additional modules
• safe observation of prominences, spots and flares
• full compliance with ISO 12312-2:2015
• compact, lightweight design, 600 mm long
• micro-movements of the focuser for precise focusing
• HELIOSTAR-76Ha optical tube
• Vixen mounting rail
• mounting clamps with transport handle
• angle attachment with locking filter 11.5 mm
• 20 mm Wide Angle 70° (1.25") eyepiece
• carrying case
• aperture: 76 mm
• focal length: 630 mm
• aperture: f/8.3
• blocking filter: 11.5 mm (in angle attachment)
• type of focuser: Crayford
• exhaust diameter: 2"
• micro-movements of the lift: yes
• optical tube length: 600 mm
• tube weight: 3.8 kg
• mounting rail: Vixen
• assembly type: no assembly
• warranty period: 60 months
