Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter

Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter

Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter

B&H # LU50HATB400 MFR # LS50THA/B400PT
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Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter

Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter Angle View

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Product Highlights

  • 50mm Objective
  • 350mm Focal Length, f/7 Focal Ratio
  • Hydrogen-Alpha Solar Filter
  • <0.75 Angstrom Bandpass
  • True Doppler Tuning
  • 4mm Star Diagonal Blocking Filter
  • 1.25" Helical Focuser
  • Integrated Mounting Base
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Mount Options: OTA Only

OTA Only OTA, GoTo Mount, Tripod

More on the Way

Blocking Filter: B400 Blocking Filter

B400 Blocking Filter B600 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.

Reg. Price: $849.00

Instant Savings: $150.00

Limited supply at this price

$0.00 Tax Collected Outside NY and NJ

You Pay: $699.00

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Lunt Solar Systems LS50THa overview

  • 1Description

Lunt Solar Systems' LS50THa 50mm f/7 Refractor Solar Telescope is ideally suited for beginner solar observers or as a grab-and-go option for fast sessions. It features a 50mm objective lens and an internal etalon with a <0.75 Angstrom bandpass. The scope is offered here with a 4mm blocking filter in a star diagonal configuration. It fits in the helical focuser and accepts 1.25" eyepieces for visual observation.

Integrating the etalon into the optical path reduces interference and distortion which can occur with externally mounted filters. 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 1.25" helical focuser. This type of focuser has a rotating collar around the filter holder in place of the focusing tube which reduces the overall length of the telescope while maintaining the ability to achieve a fine focus. This solar scope is offered here without a mount or tripod, but is outfitted with a mounting base that has a 1/4"-20 thread for attaching it to most tripods or compatible mounts.

Optical Performance
  • 50mm aperture
  • f/7 focal ratio
  • 530mm focal length
  • Refractor-style optical path
  • Internal etalon with tune adjustment allows for a <0.75 Angstrom bandpass at 656nm
  • True Doppler Tuning allows for a shift into and away from the user for enhanced viewing
Blocking Filter
  • Use for visual observation only
  • 4mm aperture
  • Fits into focuser and accepts 1.25" eyepieces
  • Star diagonal configuration
Focuser
  • 1.25" diameter
  • Helical design focuses by turning collar
  • Reduces obstructions and simplifies use
UPC: 814393021401
In the Box
Lunt Solar Systems LS50THa 50mm f/7 Refractor Solar Telescope with 4mm Blocking Filter
  • 4mm Blocking Filter
  • 2 x Dust Cap
  • Limited Five-Year Warranty
  • Table of Contents
    • 1Description

    Lunt Solar Systems LS50THa specs

    Objective Diameter 50mm
    Focal Length 350 mm
    Focal Ratio f/7
    Bandwidth <0.75 Angstrom at 656 nm
    Finderscope None
    Mounting Integrated mounting base with 1/4"-20 thread
    Length Not specified by manufacturer
    Weight Not specified by manufacturer
    Packaging Info
    Package Weight 8.8 lb
    Box Dimensions (LxWxH) 22.9 x 15.8 x 9.4"

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