Lunt 50mm Solar Telescope – 6mm Blocking Filter – Feather Touch Focuser – Zoom Eyepiece

Code: LS50THa-4


Within the continental United States for orders over $100.00.

  • The Lunt Solar Telescope LS50THa is a 50 mm h-alpha  f/7 dedicated  telescope.
  • An internal etalon with pressure-tuning adjustment allows for a <0.75 Angstrom bandpass.
  • Feather Touch Focuser
  • B600 Blocking Filter
  • Zoom Eyepiece
  • The LS50THa comes with an integrated clamshell for mounting.
  • It’s the perfect telescope for visual use.



In stock

In stock



Walkthrough of the Lunt 50mm H-Alpha Pressure Tuned Solar Telescope. Learn about this telescope and which options are right for you for:

  • Blocking Filters
  • Focusers
  • Sol-Searcher
  • Dovetail Mount
  • Eyepieces

All Lunt 50mm h-alpha Solar Telescope Systems require a Lunt Blocking Filter!

Which blocking filter is right for you?

B400 – for visual use
B600 – for larger field of view/imaging
Add the specially-designed LS50C compact double stack filter (sold separately) and lower the bandpass to less than <0.5 Angstroms.

lunt 360 logo

Get a 360° View of the Lunt Solar Systems 50mm Pressure-Tuned H-Alpha Solar Telescope

Images taken through through a 50mm H-alpha pressure tuned solar telescope


Sky & Telescope 2015 Hot Product!

The Lunt LS50THa is the perfect, professional precision-based solar telescope for astronomy beginners. Our lightweight solar telescope offers an easy portable traveling set up, making this the only and only choice for your dedicated Personal Solar Telescope.The Lunt Solar Telescope 50mm works in seamless fashion, offering guaranteed protection when viewing the Sun.  When choosing Lunt, you never worry about safety with our certified solar telescopes!

 A Sky & Telescope Magazine 2015 Hot Product, Lunt has been featured as having breathtaking solar telescopes among our peers. The LS50 is truly highest quality entry-level solar telescope on the market! The excitement of viewing our Star through a dedicated solar telescope is sure to provide many many hours of visual enjoyment and educational insights.

The Lunt LS50THa is always fully upgradeable, with multiple professional accessories to chose from without ever having to go back to the factory. Coupled here with the World Renowned Starlight Instruments 1.25″ Feather Touch Focuser, and Lunt Zoom Eyepiece, you are sure to love its smooth action and amazing views. And as the Sun becomes increasingly more active, you will certainly appreciate that the instrument can grow right along with it.

The Lunt 50mm comes complete with the basic essentials and is equipped with pressure tuning technology; lauded as the newest and ultimate technology for fine tuning, the pressure tuning allows beginners and professionals alike to delve into and research the Sun’s disk and surface details.

Doppler Tuning

True Doppler Tuning (Pressure Tuning) allows for a shift into and away from the user. Amazingly, this adds a 3D-like component to the viewing experience. Meanwhile it has minimal effect on proms due to their being at the edge of the disk, it does have an effect on filaments and active regions on the surface. Also, when 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. Therefore, you’ll be able to follow the filament through it’s structure toward you and away from you.  All of this allows for enhanced visual and imaging capability for the observer as well as a research tool for the avid hobbyist. Most importantly, the pressure tuning system provides an order of magnitude more precision to the tuning of the desired features.

LS50THa Package Features:

  • A Narrow Band Hydrogen-alpha Dedicated System.
  • A refractor-based system with a 50 mm front objective.
  • An internal Etalon with a pressure tuner allows for <0.75 Angstrom bandpass.
  • B600 blocking filter
  • Zoom eyepiece
  • The system includes the clamshell with threaded holes for mounting and dust caps.

Specifications: (single stacked)

  • Type: Single Interference Etalon
  • Tuning: Internal Pressure Tune (Doppler True Tuning)
  • Aperture: 50 mm
  • Focal Length: 350 mm
  • F Ratio: F7
  • Bandpass: <0.75 Angstroms @ 656 nm
  • Focuser: Feather Touch Focuser
  • Blocking Filter: B600 Diagonal
  • Mounting: Integrated clamshell style with 1/4-20 tapped base
  • Color: Pearl White with Black and Red accents

Read the latest about the Sun at NASA

Additional information

Weight 9 lbs
Dimensions 23 × 16 × 9 in


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