{"id":11271,"date":"2026-03-14T13:14:34","date_gmt":"2026-03-14T13:14:34","guid":{"rendered":"https:\/\/astroshop.ma\/?post_type=product&p=11271"},"modified":"2026-03-14T15:33:10","modified_gmt":"2026-03-14T15:33:10","slug":"touptek-2","status":"publish","type":"product","link":"https:\/\/astroshop.ma\/?product=touptek-2","title":{"rendered":"ToupTek LRGB 2″ FILTERS"},"content":{"rendered":"
\n
\n
\"\"<\/a><\/div>\n
<\/div>\n
Why Choose LRGB Filters?<\/div>\n<\/div>\n
\n

Designed to overcome light pollution,\u00a0the ToupTek Astro LRGB filter set empowers astrophotographers to reveal the universe’s authentic chromatic splendor.<\/p>\n

The RGB three-channel filters are essential tools for monochrome astronomy cameras to capture professional-grade images.<\/p>\n

ToupTek Astro LRGB filters\u00a0utilize advanced optical materials and precise coating technology to selectively transmit celestial emissions while blocking urban light pollution. This brings the true colors of the starry sky vividly to life and significantly enhances image contrast.<\/p>\n

Even faint celestial targets can reveal rich details. The extremely low halo effect ensures each image has excellent fidelity, elevating your astrophotography to the next level.<\/p>\n<\/div>\n

\"LRGB<\/div>\n<\/section>\n

 <\/p>\n

\n
\n
Technical Parameters<\/div>\n<\/div>\n
\n
Size:\u00a036mm (unframed) \/ 1.25\u201d (31.77mm) \/ 2\u201d<\/div>\n
Glass Thickness:\u00a02mm<\/div>\n
Transmission Range:
\nL\u00a0(420\u2013690nm);\u00a0R\u00a0(595\u2013695nm);\u00a0G\u00a0(495\u2013580nm);\u00a0B\u00a0(400\u2013510nm)<\/div>\n
Transmittance:\u00a0>95%<\/div>\n
Glass Material:\u00a0Quartz glass<\/div>\n
Frame Material:\u00a0Aluminum Alloy<\/div>\n
Surface Treatment:\u00a0Double-sided high-precision optical polishing<\/div>\n
Coating Technology:\u00a0IAD (Ion Assisted Deposition) coating technology<\/div>\n
Coating System Design:\u00a0AR anti-reflection coating + quartz glass + precision cutoff coating layer<\/div>\n
OD:\u00a0\u22655.0<\/div>\n<\/div>\n
\"LRGB<\/div>\n<\/section>\n

 <\/p>\n

\n
\n
Spectrum<\/div>\n<\/div>\n
\"LRGB<\/div>\n
\n
Spectral Chart Reading Tips:<\/div>\n
    \n
  • The horizontal axis represents the wavelength of light (unit: nm<\/b>), and the vertical axis represents light transmittance (unit: %<\/b>).
    \nGray line: L channel;\u00a0Red: R;\u00a0Green: G;\u00a0Blue: B<\/li>\n
  • The emission nebula signal bands are mainly concentrated around\u00a0656nm (H\u03b1)<\/b>,\u00a0500.7nm (OIII)<\/b>, and other bands.<\/li>\n
  • Light pollution peaks are commonly found near\u00a0540nm<\/b>\u00a0and\u00a0590nm<\/b>\u00a0(sodium\/mercury lamp bands).<\/li>\n
  • The transmission regions of the astronomical filters are engineered to avoid these interference bands, ensuring effective signal passage, enhancing contrast, and image purity.<\/li>\n<\/ul>\n<\/div>\n<\/section>\n

     <\/p>\n

    \n
    \n
    Key Features<\/span><\/div>\n<\/div>\n
    \n
    \n\u25b6\ufe0f Accurate Wavelength Bands, Restoring True Colors<\/summary>\n
    \n

    High-precision wavelength positioning, RGB reproduction closer to the human eye for more realistic target colors.<\/p>\n

    \u25b2 L Filter (420\u2013690nm):<\/span> UV\/IR cutoff for enhanced contrast and sharpness.
    \n\u25b2 R Filter (595\u2013695nm):<\/span> Highlighting the H\u03b1 and SII bands.
    \n\u25b2 G Filter (495\u2013580nm):<\/span> Suppresses mercury\/sodium pollution while transmitting OIII.
    \n\u25b2 B Filter (400\u2013510nm):<\/span> Captures H\u03b2 and OIII emissions.<\/p>\n<\/div>\n<\/details>\n

    \n\u25b6\ufe0f High-Quality Quartz Glass, High Transparency and Purity<\/summary>\n
    ToupTek filters feature high-purity quartz glass substrates with >90% transmittance. They deliver exceptional blue-violet transmission and thermal stability, ideal for demanding astronomical imaging.<\/div>\n<\/details>\n
    \n\u25b6\ufe0f IAD Dense Coating, Durable and Stable<\/summary>\n
    Using IAD (Ion Assisted Deposition) coating technology, which is more costly than conventional vacuum evaporation but produces denser and more uniform coatings that are durable, corrosion-resistant, and have superior environmental stability.<\/div>\n<\/details>\n
    \n\u25b6\ufe0f Precision Coating, Significantly Suppresses Halos<\/summary>\n
    ToupTek filters use a proprietary multi-layer coating system\u2014including single-sided cutoff, front AR coating, and edge blackening\u2014to eliminate halos, minimize stray light, and ensure long-term durability.<\/div>\n<\/details>\n
    \n\u25b6\ufe0f High Optical Cutoff Depth, Restores Natural Colors<\/summary>\n
    All filters feature OD\u22655.0 cutoff depth, blocking unwanted light to eliminate artifacts and deliver true-to-life color reproduction.<\/div>\n<\/details>\n
    \n\u25b6\ufe0f Matte Black Edge Coating, Easy Installation<\/summary>\n
    All filters feature matte black edge treatment to eliminate stray light, ensuring optimal transmittance and contrast.
    \n\u25b2 36mm filters:<\/span> Telescope-facing side has inward blackened border for instant orientation recognition.
    \n\u25b2 1.25″ & 2″ filters:<\/span> Feature threaded aluminum alloy frames for direct screw-in installation.<\/div>\n<\/details>\n
    \n\u25b6\ufe0f Highly Compatible<\/summary>\n
    All filters use a single-piece, glue-free structure.
    \n\u25b2 36mm:<\/span> APS-C & smaller sensors
    \n\u25b2 1.25″:<\/span> 1-inch & smaller sensors
    \n\u25b2 2″:<\/span> Full-frame & smaller sensors
    \nCompatible with industry-standard filter wheels:
    \n36mm: 7-hole \/ 1.25″: 8-hole \/ 2″: 5-hole<\/div>\n<\/details>\n<\/div>\n
    <\/div>\n<\/section>\n
    \n
    \"LRGB<\/div>\n<\/section>\n

     <\/p>\n

    \n
    \n
    ToupTek Astro LRGB Filter Performance<\/div>\n<\/div>\n
    \n
    NGC1999<\/b>
    \nPhotographer:\u00a0voice<\/b>
    \nCamera: ToupTek ATR2600M
    \nGuide camera: GPM462M
    \nTelescope: Sky-Watcher F3.4
    \nMount: UMI
    \nFilters: ToupTek Astro 36mm LRGB&SHO
    \nIntegration: 12 each of RGB 600s, L 600s \u00d7 36, H\u03b1 600s \u00d7 48
    \nTotal exposure: 20h<\/p>\n
    \"NGC1999<\/div>\n<\/div>\n
    LBN777<\/b>
    \nPhotographer:\u00a0voice & LiiiiiCo<\/b>
    \nCamera: ToupTek ATR2600M
    \nGuide camera: GPM462M
    \nTelescope: Sky-Watcher F3.4
    \nFilters: ToupTek Astro 36mm LRGB&H\u03b1
    \nMount: UMI
    \nIntegration: 20 each of RGB 600s, L 600s \u00d7 60, H\u03b1 1200s \u00d7 40
    \nTotal exposure: 32h<\/p>\n
    \"LBN777<\/div>\n<\/div>\n
    LDN 1532 & IC 2087<\/b>
    \nPhotographer:\u00a0voice<\/b>
    \nCamera: ToupTek ATR2600M
    \nGuide camera: GPM462M
    \nTelescope: Askar FRA400
    \nMount: UMI
    \nFilters: ToupTek Astro 36mm LRGB&SHO
    \nIntegration: 15 each of RGB 600s, L 600s \u00d7 45, H\u03b1 600s \u00d7 66
    \nTotal exposure: 26h<\/p>\n
    \"LDN<\/div>\n<\/div>\n
    \n

    M81 & M82<\/b><\/p>\n

    \"M81<\/div>\n

    Photographer:\u00a0yahushua<\/b>
    \nTelescope: Askar 130HNT28-AL
    \nCamera: ToupTek Astro ATR585M
    \nMounts: iOptron CEM26
    \nGuide camera: G3M2210M
    \nFilters: ToupTek Astro 1.25\u201d LRGB & H-alpha
    \nTotal exposure: 14h<\/p>\n

    \n

    \"M81<\/p>\n

    M81 L single exposure 300s<\/p>\n<\/div>\n

    \n

    \"M81<\/p>\n

    M81 R single exposure 300s<\/p>\n<\/div>\n

    \n

    \"M81<\/p>\n

    M81 G single exposure 300s<\/p>\n<\/div>\n

    \n

    \"M81<\/p>\n

    M81 B single exposure 300s<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n

     <\/p>\n

    \n
    \n
    Installation<\/div>\n<\/div>\n
    36mm Filters:\u00a0Align the inward black ring toward the telescope. Ensure instant orientation.
    \n1.25″ & 2″ Filters:\u00a0Screw directly into filter wheels\u2014no front\/back orientation needed.<\/div>\n
    \"HSO<\/div>\n
    \"HSO<\/div>\n
    \"LRGB<\/div>\n<\/section>\n

     <\/p>\n

    \n
    <\/div>\n
    \n

     <\/p>\n<\/div>\n<\/section>\n

     <\/p>\n

    \n
    \n
    Important Notes<\/div>\n<\/div>\n
    \n
      \n
    • Color Variation:\u00a0Filter coating colors may appear different under varying lighting conditions and viewing angles\u2014this is normal optical behavior.<\/li>\n
    • Product Improvements:\u00a0We continually optimize our products, which may result in minor specification and appearance updates. Specifications are subject to change without notice. Please refer to the physical product for final details.<\/li>\n<\/ul>\n<\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

      Why Choose LRGB Filters? Designed to overcome light pollution,\u00a0the ToupTek Astro LRGB filter set empowers astrophotographers to reveal the universe’s authentic chromatic splendor. 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