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 lens
- 630mm focal length
- Focal ratio: f/8.3
- Achromatic doublet lens design, H-alpha fully multicoated design
- Integrated Solis etalon filter technology with Trifid tuning system
- Passes 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 more
- 11.5mm, 1.25" diagonal format blocking filter
- Meets ISO 12312 safety standards
Focuser
- 2" diameter focuser
- Dual-speed Crayford-style
- Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
Included Accessories
- 20mm 70° 1.25" eyepiece, 32x magnification with this telesxcope
- Integrated Heliostar solar finder
- Tube rings and carry handle
- Vixen-style dovetail bar
- Clip-on sunshade
- Hard-shell carry case
Key Features
- Aperture: 76mm
- 630mm Focal Length, f/8.3 Focal Ratio
- Heliostar Solar Finder
- Solis Etalon with Trifid Tuner
- Blocking Filter in Diagonal
- Meets ISO 12312-2 Safety Standards
- 20mm 70° 1.25" Eyepiece
- Achromatic Doublet Lens Design
- 2" Dual-Speed Crayford Focuser
- Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope (OTA Only)
- 20mm 1.25" Eyepiece
- Smartphone Adapter
- Vixen-Style Dovetail
- Set of Mounting Rings with Handle
- Clip-On Sunshade
- Hard-Shell Carrying Case
- Limited 2-Year Manufacturer Warranty
Key Specs
| Optical Design | Refractor |
| Aperture | 76 mm / 3" |
| Focal Length | 630 mm |
| Focal Ratio | f/8.3 |
| Focuser | Dual-Speed Crayford |
| Eyepiece Barrel Diameter | 1.25" on OTA |
Optical Tube Assembly
| Optical Design | Refractor |
| Aperture | 76 mm / 3" |
| Focal Length | 630 mm |
| Focal Ratio | f/8.3 |
| Resolution | 1.52 Arcsec (Dawes), 1.84 Arcsec (Rayleigh) |
| Focuser | Dual-Speed Crayford |
| Eyepiece Barrel Diameter | 1.25" on OTA |
| Diagonal | 90° |
| Finderscope | Yes |
| Mounting | No |
| Optical Tube Dimensions | Length: 24" / 61 cm |
Filtration
| Filtration Wavelength | Hydrogen-alpha |
| Bandpass | <0.6 Å (Single Etalon) |
| Blocking Filter | 11.5 mm (Internal) |
Mount
| Payload Capacity | No |
| Altitude Adjustment | No |
| Latitude Adjustment | No |
| Counterweight | No |
General
| Mobile App Compatible | No |
Packaging Info
| Package Weight | 19.515 lb |
| Box Dimensions (LxWxH) | 27.7 x 13.9 x 11" |
Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope (OTA Only)
- Product Code: SK76HASLTS
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 lens
- 630mm focal length
- Focal ratio: f/8.3
- Achromatic doublet lens design, H-alpha fully multicoated design
- Integrated Solis etalon filter technology with Trifid tuning system
- Passes 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 more
- 11.5mm, 1.25" diagonal format blocking filter
- Meets ISO 12312 safety standards
Focuser
- 2" diameter focuser
- Dual-speed Crayford-style
- Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
Included Accessories
- 20mm 70° 1.25" eyepiece, 32x magnification with this telesxcope
- Integrated Heliostar solar finder
- Tube rings and carry handle
- Vixen-style dovetail bar
- Clip-on sunshade
- Hard-shell carry case
Key Features
- Aperture: 76mm
- 630mm Focal Length, f/8.3 Focal Ratio
- Heliostar Solar Finder
- Solis Etalon with Trifid Tuner
- Blocking Filter in Diagonal
- Meets ISO 12312-2 Safety Standards
- 20mm 70° 1.25" Eyepiece
- Achromatic Doublet Lens Design
- 2" Dual-Speed Crayford Focuser
- Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope (OTA Only)
- 20mm 1.25" Eyepiece
- Smartphone Adapter
- Vixen-Style Dovetail
- Set of Mounting Rings with Handle
- Clip-On Sunshade
- Hard-Shell Carrying Case
- Limited 2-Year Manufacturer Warranty
Key Specs
| Optical Design | Refractor |
| Aperture | 76 mm / 3" |
| Focal Length | 630 mm |
| Focal Ratio | f/8.3 |
| Focuser | Dual-Speed Crayford |
| Eyepiece Barrel Diameter | 1.25" on OTA |
Optical Tube Assembly
| Optical Design | Refractor |
| Aperture | 76 mm / 3" |
| Focal Length | 630 mm |
| Focal Ratio | f/8.3 |
| Resolution | 1.52 Arcsec (Dawes), 1.84 Arcsec (Rayleigh) |
| Focuser | Dual-Speed Crayford |
| Eyepiece Barrel Diameter | 1.25" on OTA |
| Diagonal | 90° |
| Finderscope | Yes |
| Mounting | No |
| Optical Tube Dimensions | Length: 24" / 61 cm |
Filtration
| Filtration Wavelength | Hydrogen-alpha |
| Bandpass | <0.6 Å (Single Etalon) |
| Blocking Filter | 11.5 mm (Internal) |
Mount
| Payload Capacity | No |
| Altitude Adjustment | No |
| Latitude Adjustment | No |
| Counterweight | No |
General
| Mobile App Compatible | No |
Packaging Info
| Package Weight | 19.515 lb |
| Box Dimensions (LxWxH) | 27.7 x 13.9 x 11" |
- Brand: Sky-Watcher
- Product Code: SK76HASLTS
- Availability: In Stock
$2,199.00
Tags:Sky-WatcherHeliostar76mm f/8.3H-Alpha Solar TelescopeOTA OnlySolar ObservationAstrophotographyProfessional Solar OpticsSun ObservationAstronomy Equipment
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