Lunt Solar Systems LS152THa 152mm f/6 Refractor Solar Telescope with 34mm Blocking Filter (OTA only)

Lunt Solar Systems LS152THa 152mm f/6 Refractor Solar Telescope with 34mm Blocking Filter (OTA only)

Lunt Solar Systems LS152THa 152mm f/6 Refractor Solar Telescope with 34mm Blocking Filter (OTA only)

B&H # LU152HAT3400 MFR # LS152THA/B3400
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Expected availability: 6-10 weeks

Product Highlights

  • 152mm Objective
  • 900mm Focal Length, f/6 Focal Ratio
  • Hydrogen-Alpha Solar Filter System
  • <0.65 Angstrom Bandpass at 656 nm
  • True Doppler Tuning
  • 34mm Straight-Viewing Blocking Filter
  • 2" Starlight Feather Touch Focuser
  • 7.2-21.5mm Flat-Field Zoom Eyepiece
  • 12" Vixen-Style Dovetail Plate
  • Includes Foam-Lined Aluminum Case
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Options: Includes 34mm Blocking Filter

Includes 12mm Blocking Filter

Special Order

Includes 18mm Blocking Filter

Special Order

Includes 34mm Blocking Filter

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 LS152THa overview

  • 1Description

Designed and purpose-built for solar observation, the Lunt Solar Systems LS152THa 152mm f/6 Refractor Solar Telescope features a massive 152mm objective lens and an internal etalon with a pressure tuner that allows for a <0.65 Angstrom bandpass at the 656nm wavelength, providing slightly higher surface detail without the loss of edge detail. The scope is offered here with a 34mm blocking filter in a straight-through viewing configuration. It fits in the focuser and accepts 1.25" eyepieces or accessories for a wider field of view versus smaller aperture filters or for imaging equipment with larger sensors.

Integrating the etalon into the optical path eliminates visual obstructs which can occur with externally mounted filters, and the optical path is fully multicoated with coatings that are engineered specifically to enhance contrast for solar observation and imaging. True Doppler Tuning allows for a shift into and away from the user for a richer depth of field. While looking at a filament at the center of the Sun, the user has the ability to Doppler shift from the base of the filament to the tip, following the filament through its structure toward and away from them, allowing for enhanced visual and imaging capability.

Complementing the optical performance and technologies is a Starlight Instruments Feather Touch 2" focuser with a 10:1 reduction that ensures extremely fine-tuned image resolution. Lunt includes their flat-field zoom eyepiece that produces magnifications from 42x to 125x when used with this OTA. A textured collar enables quick transition from the 7.2mm to 21.5mm focal lengths. This solar scope is offered here without a mount or tripod and comes equipped with a 12" Vixen-style dovetail plate that enables it to be mounted on any compatible platform. A foam-lined aluminum hard carrying case is included for safe and secure transport and storage.

Optical Performance
  • 152mm aperture
  • f/6 focal ratio
  • 900mm focal length
  • Refractor-style optical path
  • Hydrogen-alpha filter system allows observation of the surface and edge of the Sun
  • Internal etalon with tune adjustment allows for a <0.65 Angstrom bandpass at the 656nm wavelength
  • Fully multicoated optics; coatings are engineered for enhanced contrast during solar observation
  • True Doppler Tuning allows for a shift into and away from the user for enhanced viewing
Blocking Filter
  • Use for larger field of view and for imaging with equipment with larger sensors
  • 34mm aperture
  • Fits into focuser and accepts 1.25" eyepieces and accessories
  • Straight-viewing configuration
  • 2" Starlight Feather Touch focuser
  • Course and fine focusing ability
  • 10:1 reduction
  • 7.2 - 21.5mm focal length
  • 1.25" diameter barrel
  • 53-40° apparent field of view
  • 0.1% anti-reflection coated optics
  • Seven lenses in four groups
  • Easy-grip zoom collar
  • Produces magnifications from 125x to 41x
  • Aluminum hard carrying case
  • Custom-cut foam insert for secure fit

Lunt Solar Systems LS152THa specs

Objective Diameter 152mm
Focal Length 900 mm
Focal Ratio f/6
Bandwidth <0.65 Angstrom
Finderscope None
Mounting 12" / 30.5 cm, Vixen-style plate
Length Not specified by manufacturer
Weight 30.0 lb / 13.6 kg
Packaging Info
Package Weight 25.0 lb
Box Dimensions (LxWxH) 41.0 x 21.5 x 19.0"

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