Lunt Solar Systems LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope (18mm Blocking, 2" Rack-and-Pinion Focuser)

Lunt Solar Systems LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope (18mm Blocking, 2" Rack-and-Pinion Focuser)

Lunt Solar Systems LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope (18mm Blocking, 2" Rack-and-Pinion Focuser)

Lunt Solar Systems LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope (18mm Blocking, 2" Rack-and-Pinion Focuser)

Lunt Solar Systems LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope (18mm Blocking, 2" Rack-and-Pinion Focuser)

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Expected availability: 7-10 business days

Product Highlights

  • 80mm Clear Aperture
  • 560mm Focal Length, f/7 Focal Ratio
  • Single Etalon Hydrogen-A Solar Filter
  • <0.75 Angstrom Bandpass
  • True Doppler Pressure Tuned
  • 18mm Star Diagonal Blocking Filter
  • 2" Rack-and-Pinion Focuser
  • 7.2-21.5mm Flat Field Zoom Eyepiece
  • Tele Vue Sol-Searcher Solar Finderscope
  • Hard Carrying Case & Dovetail Saddle
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Blocking Filter: 18 mm Star Diagonal

12 mm Star Diagonal

Special Order

18 mm Star Diagonal

Focuser: Dual-Speed Rack-and-Pinion

Dual-Speed Crayford-Style

Not available with current selections

Dual-Speed Rack-and-Pinion

SAFETY FIRST: Observing the Sun without the proper protection may result in serious personal injury, including permanent eye damage and blindness, and/or damage to equipment. Never point an optic at the sun without an approved solar filter on the front of the optic. For direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder, ensure your filter is ISO 12312-2 (also written as ISO 12312-2:2015) certified. Never use photographic neutral density filters for direct solar viewing, viewing the sun through an optic, or when using cameras with an optical viewfinder.

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Lunt Solar Systems LS80THa overview

  • 1Description

Lunt Solar Systems offers a complete dedicated solar observation instrument with the LS80THA 80mm f/7 Hydrogen-A Solar Refractor Telescope. This precision-aligned refractor has a fully unobstructed 80mm aperture with a 560mm focal length, and provides a step up into the intermediate category of solar observing over smaller models. Its pressure-tuned Doppler True Tuning is capable of fine adjustment of the center wavelength, allowing research of the Sun's disk and surface details at increased image scale. Prominences, flares, super granulation, filaments, and active regions will be able to be observed.

True Doppler Tuning allows for a shift into and away from the user, adding a depth of field and increased contrast to the viewing experience. While it will have minimal effect on proms due to their location at the edge of the disk, it will have an effect on filaments and active regions on the surface. While looking at a filament at the center of the Sun, the user will have the ability to Doppler shift from the base of the filament to the tip, following the filament through its structure toward you and away from you, allowing for enhanced visual and imaging capability.

The scope is outfitted with a 2" dual-speed Feather Touch rack-and-pinion focuser and a 18mm blocking filter that can be used for visual observation with a wider field of view over smaller blocking filters or imaging. A flat field zoom eyepiece is included that produces a wide magnification range from 26-78x power. It features a flat-field design that removes the fuzziness and flared appearance that can often appear near the edges of conventional eyepieces for sharp images across the entire field of view.

To safely find the sun to begin observation, Lunt includes the Tele Vue Sol Searcher solar finderscope. Its projection-style system allows you to find and align the scope with the Sun without putting your eyes in danger. A 6" Vixen-style dovetail saddle allows the OTA to be used with a large array of user-supplied EQ or Alt-Az mounts for more precise and easier tracking. To protect your investment during transportation and storage, a foam-lined hard carrying case is also included.

Optical Performance
  • 80mm aperture
  • f/7 focal ratio
  • 560mm focal length
  • Refractor-style optical path
  • Internal etalon with tune adjustment allows for a <0.75 Angstrom bandpass at 656nm
  • True Doppler pressure tuning allows for a shift into and away from the user for enhanced viewing
Blocking Filter
  • 18mm aperture
  • Use for visual observation or imaging
  • Fits into focuser and accepts 1.25" eyepieces and accessories
  • Star diagonal configuration
  • 2" diameter
  • Feather-Touch rack-and-pinion design
  • Dual-speed with 10:1 fine-tuning for precision focusing
  • Rack-and-pinion focusers are generally better for handling heavier weights, such as imaging systems, than a Crayford-style
Included Accessories
  • 7.2-21.5mm Flat Field Zoom Eyepiece:
    • Produces 78-26x magnifications
    • 1.25" diameter barrel
    • 53-40° apparent field of view
    • 0.1% anti-reflection coated optics
    • Flat-field design removes the fuzziness and flared appearance that can often appear near the edges of conventional eyepieces
  • Tele Vue Sol-Searcher Solar Finderscope:
    • Safe and easy way to find the Sun without looking directly at it
    • Projects image through small aperture onto a 0.25" screen
  • 6" Vixen-style dovetail plate:
    • Attaches to clamshell mount
    • Enables the use with many more conventional astronomical Alt-Az and EQ mounts
  • Carrying Case:
    • Aluminum hard carrying case
    • Custom-cut foam for OTA
    • For safe storage and transport of the OTA
UPC: 814393021920

Lunt Solar Systems LS80THa specs

Aperture 80mm
Focal Length 560 mm
Focal Ratio f/7
Bandwidth <0.5 Angstrom
Safety Blocking 18 mm Star Diagonal
Focuser 2" dual-speed Feather Touch rack-and-pinion
Finderscope Tele Vue Sol Searcher
Mount 6.0" / 15.2 cm Vixen-style dovetail plate
Length Not specified by manufacturer
Weight 8.8 lb / 4.0 kg

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