SK76HASLTS

S11315

Sky-Watcher

The Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope is a dedicated optic for solar viewing only. This is no general-use refractor with a solar filter over the aperture the Heliostar is built with a highly precise Solis etalon bandpass filter, refined by a Trifid tuner, to block all but a 0.55-angstrom sliver of hydrogen-alpha light. That light, in the 656.3nm wavelength, permits observation of solar phenomena in rich detail, including prominences, filaments, sunspots, and solar flares. The Heliostar also features a blocking filter in the eyepiece diagonal and meets ISO 12312 safety standards. It comes with a 20mm 1.25" eyepiece with a 70 angle of view that provides 32x magnification and a smartphone adapter so you can capture and share the remarkable sights you see.Optical Performance 76mm objective lens630mm focal lengthFocal ratio: f/8.3Achromatic doublet lens design, H-alpha fully multicoated designIntegrated Solis etalon filter technology with Trifid tuning systemPasses only hydrogen-alpha 656.3nm bandwidth, which enables detailed observation of prominences on the limb of the sun, active sunspot regions, bright plage patches, surface granulation, snake-like plasma filaments, and more11.5mm, 1.25" diagonal format blocking filterMeets ISO 12312 safety standardsFocuser 2" diameter focuserDual-speed Crayford-styleCrayford focusers use a toothless friction system that allows for super-fine precision focusing without backlashIncluded Accessories 20mm 70 1.25" eyepiece, 32x magnification with this telesxcopeIntegrated Heliostar solar finderTube rings and carry handleVixen-style dovetail barClip-on sunshadeHard-shell carry case