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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
Lunt High Resolution H-alpha Filter for DS Modules
Lunt High Resolution H-alpha Filter for DS Modules

Lunt High Resolution H-alpha Filter for DS Modules

by Lunt Solar Systems
SKU LSS-HRG/80
$249.00 - $269.00
$269.00
$249.00 - $269.00
$269.00
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  • Designed for 80mm and 100mm Lunt Double-Stack Systems
  • Enhances Contrast for High-Resolution Solar Imaging
  • Reduces Faint Background Glow
  • Improves Visibility of Solar Prominences and Limb Detail
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  • Description
  • FAQ
  • Specifications
  • In the Box
  • Warranty

  • Lunt High Resolution H-alpha Filter for DS Modules

    Designed for Lunt's 80mm and 100mm internal double-stack systems, the Lunt High Resolution H-alpha Filter is a critical upgrade for solar imagers seeking maximum contrast on the solar limb. This filter specifically targets the faint background glow inherent in double-stacking, improving the visibility of fine prominence structures and surface details in both the 80mm and 100mm apertures.

    Suppressing Background Glow in Lunt Double-Stack Systems

    An internal double-stack (DS) system dramatically increases contrast on the Sun's chromosphere, but it introduces a faint, out-of-band glow. The Lunt High Resolution Filter is engineered to suppress this specific background signal. By filtering out this unwanted light, the sky background around the Sun becomes darker, making faint prominences stand out with greater clarity.

    Optimizing Your System for Solar Prominence Imaging

    This filter is an essential tool for imagers focused on capturing the dynamic, intricate details at the Sun's edge. Because prominences are viewed against the blackness of space, any reduction in background glow directly translates to a higher signal-to-noise ratio in your final image. The result is sharper, more defined filaments and eruptive events, revealing structure that would otherwise be lost in the faint haze.

  • What is the primary purpose of the Lunt High Resolution H-alpha Filter?

    The Lunt High Resolution Filter is designed as an add-on for Lunt's internal double-stack (DS) solar systems. Its sole function is to reduce the faint background glow that is an inherent characteristic of DS systems, thereby increasing contrast for imaging, particularly on faint solar prominences and limb details.

    Is the Lunt High Resolution Filter necessary for visual observing?

    While it can darken the background slightly for visual use, this filter is primarily designed for solar imaging. The benefits are most apparent in processed images where faint signals can be separated from background noise. For purely visual observers, the effect may be too subtle to justify the addition.

    How will the Lunt High Resolution Filter improve my images of a solar flare with an 80mm Lunt telescope?

    When imaging a dynamic event like a solar flare or eruptive prominence with your 80mm Lunt DS system, the High Resolution Filter helps by producing a darker background. This allows you to capture the faintest, outermost loops and plasma structures of the flare, which might otherwise be lost in the residual glow of the double-stack system.

    Does the Lunt High Resolution Filter change the bandpass of my double-stack system?

    No, this filter does not alter the fundamental bandpass of your primary etalon or double-stack module. It is an out-of-band rejection filter, meaning it works by blocking faint light outside the desired H-alpha wavelength, effectively "cleaning up" the image without narrowing the bandpass itself.

    I'm imaging the solar limb with a 100mm Lunt DS system. Will this filter help resolve fine spicules?

    Yes. Spicules are fine, jet-like structures on the solar limb that require high contrast to be seen clearly. By suppressing the background glow with the Lunt High Resolution Filter on your 100mm DS scope, you increase the contrast between the spicules and the background, making them easier to resolve and capture in your images.

    Is the Lunt High Resolution Filter compatible with single-stack systems or non-Lunt telescopes?

    This filter is specifically designed to address an artifact of Lunt's internal double-stack systems. It is not intended for, and will not provide a significant benefit to, single-stack solar setups or telescopes from other manufacturers.

  • Available Apertures 80mm, 100mm
    GTIN (80mm) HRG/80DS
    MPN (100mm) HRG/100DS
    Compatibility Lunt Solar Systems Internal Double Stack (DS) Modules

    • Lunt High Resolution H-alpha Filter

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  • Lunt Solar Systems 5-Year Warranty