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ToupTek LRGB 2" FILTERS

ToupTek LRGB 2″ FILTERS

د.م.3,500.00

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Why Choose LRGB Filters?

Designed to overcome light pollution, the ToupTek Astro LRGB filter set empowers astrophotographers to reveal the universe’s authentic chromatic splendor.

The RGB three-channel filters are essential tools for monochrome astronomy cameras to capture professional-grade images.

ToupTek Astro LRGB filters utilize 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.

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.

LRGB filters for astrophotography

 

Technical Parameters
Size: 36mm (unframed) / 1.25” (31.77mm) / 2”
Glass Thickness: 2mm
Transmission Range:
L (420–690nm); R (595–695nm); G (495–580nm); B (400–510nm)
Transmittance: >95%
Glass Material: Quartz glass
Frame Material: Aluminum Alloy
Surface Treatment: Double-sided high-precision optical polishing
Coating Technology: IAD (Ion Assisted Deposition) coating technology
Coating System Design: AR anti-reflection coating + quartz glass + precision cutoff coating layer
OD: ≥5.0
LRGB filters for astrophotography

 

Spectrum
LRGB filters for astrophotography
Spectral Chart Reading Tips:
  • The horizontal axis represents the wavelength of light (unit: nm), and the vertical axis represents light transmittance (unit: %).
    Gray line: L channel; Red: R; Green: G; Blue: B
  • The emission nebula signal bands are mainly concentrated around 656nm (Hα), 500.7nm (OIII), and other bands.
  • Light pollution peaks are commonly found near 540nm and 590nm (sodium/mercury lamp bands).
  • The transmission regions of the astronomical filters are engineered to avoid these interference bands, ensuring effective signal passage, enhancing contrast, and image purity.

 

Key Features
▶️ Accurate Wavelength Bands, Restoring True Colors

High-precision wavelength positioning, RGB reproduction closer to the human eye for more realistic target colors.

▲ L Filter (420–690nm): UV/IR cutoff for enhanced contrast and sharpness.
▲ R Filter (595–695nm): Highlighting the Hα and SII bands.
▲ G Filter (495–580nm): Suppresses mercury/sodium pollution while transmitting OIII.
▲ B Filter (400–510nm): Captures Hβ and OIII emissions.

▶️ High-Quality Quartz Glass, High Transparency and Purity
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.
▶️ IAD Dense Coating, Durable and Stable
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.
▶️ Precision Coating, Significantly Suppresses Halos
ToupTek filters use a proprietary multi-layer coating system—including single-sided cutoff, front AR coating, and edge blackening—to eliminate halos, minimize stray light, and ensure long-term durability.
▶️ High Optical Cutoff Depth, Restores Natural Colors
All filters feature OD≥5.0 cutoff depth, blocking unwanted light to eliminate artifacts and deliver true-to-life color reproduction.
▶️ Matte Black Edge Coating, Easy Installation
All filters feature matte black edge treatment to eliminate stray light, ensuring optimal transmittance and contrast.
▲ 36mm filters: Telescope-facing side has inward blackened border for instant orientation recognition.
▲ 1.25″ & 2″ filters: Feature threaded aluminum alloy frames for direct screw-in installation.
▶️ Highly Compatible
All filters use a single-piece, glue-free structure.
▲ 36mm: APS-C & smaller sensors
▲ 1.25″: 1-inch & smaller sensors
▲ 2″: Full-frame & smaller sensors
Compatible with industry-standard filter wheels:
36mm: 7-hole / 1.25″: 8-hole / 2″: 5-hole
LRGB filters for astrophotography

 

ToupTek Astro LRGB Filter Performance
NGC1999
Photographer: voice
Camera: ToupTek ATR2600M
Guide camera: GPM462M
Telescope: Sky-Watcher F3.4
Mount: UMI
Filters: ToupTek Astro 36mm LRGB&SHO
Integration: 12 each of RGB 600s, L 600s × 36, Hα 600s × 48
Total exposure: 20h

NGC1999 Sample Image
LBN777
Photographer: voice & LiiiiiCo
Camera: ToupTek ATR2600M
Guide camera: GPM462M
Telescope: Sky-Watcher F3.4
Filters: ToupTek Astro 36mm LRGB&Hα
Mount: UMI
Integration: 20 each of RGB 600s, L 600s × 60, Hα 1200s × 40
Total exposure: 32h

LBN777 Sample Image
LDN 1532 & IC 2087
Photographer: voice
Camera: ToupTek ATR2600M
Guide camera: GPM462M
Telescope: Askar FRA400
Mount: UMI
Filters: ToupTek Astro 36mm LRGB&SHO
Integration: 15 each of RGB 600s, L 600s × 45, Hα 600s × 66
Total exposure: 26h

LDN 1532 & IC 2087 Sample Image

M81 & M82

M81 & M82 Sample Image

Photographer: yahushua
Telescope: Askar 130HNT28-AL
Camera: ToupTek Astro ATR585M
Mounts: iOptron CEM26
Guide camera: G3M2210M
Filters: ToupTek Astro 1.25” LRGB & H-alpha
Total exposure: 14h

M81 & M82 Sample Image

M81 L single exposure 300s

M81 & M82 Sample Image

M81 R single exposure 300s

M81 & M82 Sample Image

M81 G single exposure 300s

M81 & M82 Sample Image

M81 B single exposure 300s

 

Installation
36mm Filters: Align the inward black ring toward the telescope. Ensure instant orientation.
1.25″ & 2″ Filters: Screw directly into filter wheels—no front/back orientation needed.
HSO filters for astrophotography
HSO filters for astrophotography
LRGB filters for astrophotography

 

 

 

Important Notes
  • Color Variation: Filter coating colors may appear different under varying lighting conditions and viewing angles—this is normal optical behavior.
  • Product Improvements: We 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.

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