Skip to content
Closed October 10–12 for Thanksgiving weekend
Closed October 10–12 for Thanksgiving weekend
Lunt 50mm Double Stack Module - LS50THa

Lunt 50mm Double Stack Module - LS50THa

by Lunt Solar Systems
SKU LSS-LS50CP
CA$1,393.00 - CA$1,393.00
CA$1,393.00
CA$1,393.00 - CA$1,393.00
CA$1,393.00
Price Match Policy!
  • Double-Stack Filter for LS50THa Telescopes
  • Dramatically Increases Chromospheric Contrast
  • Reveals Fine Detail in Filaments and Prominences
  • Compact, Lightweight Design Preserves Portability
  • Tool-Free, Front-Mount Installation
1 in stock
FREE Shipping in Canada
  • Description
  • FAQ
  • Specifications
  • In the Box
  • Downloads
  • Warranty

  • Lunt 50mm Double Stack Module - LS50THa

    The Lunt 50mm LS50C Double Stack Module is the factory-designed etalon upgrade for the Lunt LS50THa 50mm solar telescope. This compact, front-mounted filter adds a second, precisely tuned etalon to the optical path, significantly narrowing the system's bandpass. The result is a dramatic increase in chromospheric contrast, transforming surface textures into resolved, high-fidelity structures.

    Double-Stacking the 50mm Lunt: Unlocking High-Contrast Detail

    By adding a second etalon, the LS50C module substantially boosts the contrast of solar features against the bright chromosphere. This enhancement is immediately visible, revealing complex details that are subtle or invisible in a single-stack system. The upgrade allows you to resolve the multi-strand architecture and dark cores of filaments, see internal threading within prominences, and clearly separate active plage regions from the surrounding surface.

    • High-Contrast Views: The narrower bandpass darkens the solar disk, making bright features like filaments and plage stand out with striking clarity.
    • Verified Etalons: Each new-generation etalon is individually tested and verified on precision metrology equipment to ensure it meets Lunt's stringent specifications.
    • Tilt-Tuned Mechanism: A fine-tuning knob allows you to tilt the etalon, shifting the bandpass slightly to optimize the view for different features across the solar disk.

    LS50C Design: A Compact, Tool-Free Upgrade for the LS50THa

    The LS50C is engineered to maintain the portable, "grab-and-go" nature of the LS50THa telescope. It threads directly onto the front of the optical tube in seconds without requiring any tools or a return trip to the factory. This seamless integration ensures your compact solar setup remains lightweight and easy to manage on a photo tripod or small equatorial mount, making it the ideal high-contrast upgrade that doesn't sacrifice convenience.

    • LS50THa Specific: This module is designed exclusively for the Lunt LS50THa series of telescopes and is not intended for use with other models.
    • Front-Mount Filter: Attaches securely to the objective end of the telescope for quick installation and removal.
    • Safety Requirement: A Lunt blocking filter is required for safe operation. The LS50C is an etalon filter and cannot be used as a standalone solar filter.

  • What is the purpose of the Lunt LS50C Double Stack Module?

    The Lunt LS50C is an external etalon filter designed specifically for the Lunt LS50THa 50mm solar telescope. Its purpose is to "double stack" the system by adding a second filter, which narrows the final bandpass and dramatically increases the contrast of features on the Sun's chromosphere, such as filaments, prominences, and plage.

    How do I install the LS50C on my LS50THa telescope?

    Installation is simple and requires no tools. The LS50C Double Stack Module threads directly onto the front of your existing LS50THa telescope's objective lens cell. Simply unthread the dew shield/sun shade, thread the LS50C on until it is snug, and then re-attach the dew shield to the front of the LS50C.

    What specific visual improvements can I expect with the LS50C Double Stack Module on the Sun's surface?

    You will see a significant increase in surface detail. Vague textures seen in a single-stack view will resolve into distinct structures. With the LS50C module, you can expect to see:

    • Darker, more defined cores within filaments.
    • Fine, thread-like details inside prominences.
    • Clear separation of bright plage regions from the background chromosphere.

    Is the Lunt LS50C a standalone solar filter?

    No, it is not. This is critically important for safety. The LS50C is an etalon filter only and must be used with a Lunt LS50THa telescope that contains a required Lunt blocking filter in the diagonal or focuser. Using the LS50C without a proper blocking filter will not protect your eyes and will result in permanent blindness.

    Will adding the LS50C make my LS50THa setup heavy or hard to balance?

    No. The LS50C is designed to be compact and lightweight specifically to preserve the portability of the LS50THa system. While it adds a small amount of weight to the front of the telescope, the total system remains manageable on Vixen-style mounts or even robust photo tripods, and re-balancing is typically straightforward.

    Does the Lunt LS50C work with any other Lunt telescopes?

    This module, the LS50C, is made specifically for the Lunt LS50THa 50mm dedicated solar telescope series. It is not designed to be compatible with other Lunt telescope models or solar filters from other brands.

  • SKU LS50CP

    • No items are listed in the box for this module.

  • Lunt Solar Systems 5-Year Warranty