Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope

SKU: SKS11315 MFR: S11315
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Key Features

  • Explore solar viewing with this 76mm aperture Sky-Watcher telescope, perfect for detailed sunspots.
  • Capture stunning solar images using the included smartphone adapter with this solar telescope.
  • Enjoy safe solar observation with the <0.55A bandpass, H-alpha filter ensuring eye safety.
  • Achieve sharp, high-contrast views of the sun through the diffraction limited optical quality.
  • Utilize the dual-speed Crayford focuser for precise image adjustments on this Sky-Watcher.
  • Transport and protect your Heliostar telescope easily with the included hard-shell carrying case.
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Sky-Watcher Heliostar Specifications

Optical

Optical

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  • Optical Design

    Achromatic

  • Lens Coating

    H-alpha fully multicoated

  • Lens Design

    Doublet

  • Optical Quality

    Diffraction limited (1/4 wave)

  • Collimatable Cell

    No (Self Aligning Cell)

  • Primary Aperture

    76mm

  • F/Ratio

    8.3

  • Focal Length

    630mm

  • Blocking Filter Size

    11.5mm

  • Solar Image Size

    6mm

  • Bandpass

    < 0.55A

Accessories

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  • Eyepieces

    20mm 70 Degree 1.25" eyepiece

  • Diagonal

    11.5mm 1.25" H-alpha blocking diagonal

  • Camera Adapter

    Cell phone adapter

  • Additional Accessories

    Sun shade

  • Included finder

    Heliostar solar finder

  • Manual

    Digital PDF

  • Case

    Yes

Observational Info

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  • Dawes Limit

    1.52

  • Rayleigh Limit

    1.84

  • Limiting Magnitude

    11.88

  • Minimum Magnification

    7x

  • Maximum Magnification

    150x

  • Magnification with included eyepieces

    32x

  • Intended use

    Solar (visual & Imaging)

Mechanical

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  • Focuser Type

    Crayford

  • Focuser Size

    2" (5.08cm)

  • Focuser: Dual or Single Speed

    Dual speed

  • Compression Ring

    No (Only on diagonal)

  • OTA material

    Aluminum

  • Mounting Rings?

    Mounting Rings

  • Dovetail type

    V-style

  • Length

    Optical Tube: 24" (60.96cm)

  • Weight

    Optical Tube: 8.4 lbs (3.81kg)

  • UPC Code

    810098970624

About Sky-Watcher Heliostar

Let the Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope illuminate your solar observations with unparalleled precision and clarity. This dedicated Hydrogen-alpha (Ha) solar telescope is a standout addition to the Sky-Watcher lineup, offering enthusiasts the ability to explore the Sun's dynamic surface in extraordinary detail. Unlike standard white-light solar filters, the Heliostar 76mm Ha telescope allows you to witness the Sun's fascinating phenomena, including solar prominences, active sunspot regions, bright plage patches, surface granulation, and intricate plasma filaments.

Perfectly timed for the solar maximum in 2025, the Heliostar 76Ha comes equipped with a comprehensive set of accessories, ensuring you are ready for solar viewing right out of the box. Included are mounting rings, a V-style dovetail, a Heliostar solar finder, a dual-speed Crayford focuser, an 11.5mm blocking filter, a clip-on sunshade, a 20mm 70-degree 1.25" eyepiece, and a camera phone adapter for capturing and sharing stunning solar images. All components are conveniently housed in a rugged carrying case, making the Heliostar 76 an ideal companion for on-the-go solar exploration. Pair it with the Sky-Watcher SolarQuest mount for an ultimate portable solar telescope setup.

Recognized as the Official Solar Telescope of the Charlie Bates Solar Astronomy Project, the Heliostar 76mm Ha Solar Telescope offers exceptional double-stack performance without the need for an additional etalon filter. This innovative design provides users with enhanced solar observation capabilities at a fraction of the cost.

Safety is paramount with the Sky-Watcher Heliostar 76mm H-Alpha Solar Telescope, which meets ISO 12312-2 safety standards. Each unit undergoes rigorous testing on the actual Sun to ensure safe solar viewing. The 11.5mm blocking filter in the removable eyepiece diagonal is a crucial safety feature, and it is essential to use it as directed to prevent serious eye damage.

The Heliostar utilizes advanced Hydrogen Alpha technology, observing the Sun at the 656.3 nm wavelength, crucial for studying solar phenomena in the chromosphere. The etalon filter, a core component of Ha solar telescopes, isolates this wavelength, allowing for detailed observation of solar dynamics. Sky-Watcher's Solis technology achieves a 0.55A bandpass, delivering detailed solar disk images without the need for a second etalon.

Inside the Heliostar, the Trifid tuning system applies precise pressure to the etalon plates, enabling accurate tuning to the desired Hydrogen-band. This system, supported by three veins, ensures secure and reliable tuning for optimal solar observation.

Experience the Sun like never before with the Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope, a powerful tool for both amateur and seasoned solar astronomers.

Sky-Watcher Heliostar Features

  • Double stack performance, single stack price
  • 76mm aperture
  • 630mm focal length
  • Focal Ratio f/8.3
  • Official solar telescope of the Charlie Bates Solar Astronomy Project
  • Integrated Heliostar solar finder, tube rings, and carry handle
  • Integrated Triffid Tuner and Solis Etalon Technology
  • <0.55 Angstrom bandpass
  • H-alpha fully multicoated lens
  • Achromatic doublet design
  • 2-inch dual-speed Crayford focuser
  • 11.5mm, 1.25" diagonal format blocking filter

Warranty Information

This product has a limited warranty of 24 months for parts and 24 months for labor.

Key Features

  • Explore solar viewing with this 76mm aperture Sky-Watcher telescope, perfect for detailed sunspots.
  • Capture stunning solar images using the included smartphone adapter with this solar telescope.
  • Enjoy safe solar observation with the <0.55A bandpass, H-alpha filter ensuring eye safety.
  • Achieve sharp, high-contrast views of the sun through the diffraction limited optical quality.
  • Utilize the dual-speed Crayford focuser for precise image adjustments on this Sky-Watcher.
  • Transport and protect your Heliostar telescope easily with the included hard-shell carrying case.

What's in the box:

  • Sky-Watcher Heliostar 76mm f/8.3 H-Alpha Solar Telescope
  • 20mm 1.25" Eyepiece
  • Smartphone Adapter
  • Vixen-Style Dovetail
  • Set of Mounting Rings with Handle
  • Clip-On Sunshade
  • Hard-Shell Carrying Case
  • Sky-Watcher 2 Year Limited Warranty