Lunt 50mm Solar Telescope – Double Stack – 6mm Blocking Filter – Helical Focuser – Zoom Eyepiece

(1 customer review)


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  • The Lunt Solar Telescope LS50THa is a 50 mm h-alpha  f/7 dedicated  telescope.
  • 50mm Clear Aperture Front Mount Double Stack Filter
  • Internal Etalon: True Doppler pressure tuning for precision tuning adjustments.
  • 1.25″ Helical Focuser
  • 6mm Blocking Filter
  • Zoom Eyepiece
  • The LS50THa comes with an integrated clamshell for mounting.
  • It’s the perfect telescope for visual & imaging use.
  • Includes Sol Searcher and 4″ Dovetail
  • Lead time: 3-6 Weeks

Available on backorder


50mm H-Alpha Pressured Tuned Solar Telescope

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

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.

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

Sky & Telescope 2015 Hot Product!

Lunt 50mm Dedicated Solar Telescope with Lunt 50C Double Stack Unit

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! Coupled with the Lunt Double Stack LS50C Unit, you are sure to spend your days admiring our closest Star!

The Lunt 50C Double Stack unit is the perfect addition to any Lunt 50mm Telescope, lowering your band pass to <.5A. The LS50THa is known for its clarity of view in such an accessible format, and with the easily attached LS50C Unit (Simply thread onto the front objective and view!) you wont believe the difference until you see it! Surface details and phenomena will seem to truly leap off the surface, providing a 3D effect right before your very eyes. Use your included Lunt Zoom Eyepiece to switch magnifications, and really zoom!

 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 our standard Helical  Focuser, and Lunt Zoom Eyepiece, you are sure to love its ease of use 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 <0.50 Angstrom bandpass.
  • B600 blocking filter
  • Zoom Eyepiece
  • The system includes the clamshell with threaded holes for mounting and dust caps.
Specifications: (Double stacked)
  • Tuning: Internal Pressure Tune (Doppler True Tuning)
  • Aperture: 50 mm
  • Focal Length: 350 mm
  • F Ratio: F7
  • Bandpass: <0.50 Angstroms @ 656 nm
  • LS50C Double Stack Module
  • Focuser: 1.25″ Helical 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

1 review for Lunt 50mm Solar Telescope – Double Stack – 6mm Blocking Filter – Helical Focuser – Zoom Eyepiece

  1. sawmann55 (verified owner)

    Have had this 50mm double stack for a month now, at this sale price. Now can give it an honest review. Owned a 60mm single stack previously, but sold it. Have regretted the sale ever since. Saw this (on sale) 50mm with a double stack and could not pass it up. This 50mm DS is a super deal. Absolutely a quality product. Views (single stack) 50mm to 60mm are the same. The 60mm was able to zoom in a little closer to all details better than 50mm. Has longer focal length. I do miss that. Here’s where the 50mm shines. The double stack feature makes up for it. More and better solar surface detailing. Fantastic! Did have a problem with the helical focuser. Called Lunt and they are sending out a warranty replacement focuser. All in all very happy with purchase and do recommend this product.

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