ToupTek Astro LRGB Filter Set

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

ToupTek Astro LRGB filter sets provide L, R, G, and B channel filters for monochrome deep-sky imaging workflows.

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

ToupTek Astro LRGB filters use quartz glass and optical coatings to define the L, R, G, and B transmission ranges while reducing common out-of-band light sources.

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

Technical Parameters

Size Specifikationer 36mm (unmounted) / 1.25" (31.77mm) / 2"

Glass Thickness 2mm

Transmission >95%

Glass Material Quartz Glass

Frame Material Aluminum Alloy Metal

OD Value ≥5.0

Transmission Ranges

L 420–690nm

R 595–695nm

G 495–580nm

B 400–510nm

Surface Treatment: Dual-side high-precision optical polishing

Coating Technology: IAD (Ion Assisted Deposition) coating technology

Coating System Design: AR anti-reflection coating + quartz glass + precision cut-off coating layer

Spectral Response Curves

Spectral Chart Reading Guide

Horizontal axis represents wavelength (unit: nm), vertical axis represents transmission (unit: %)
Gray line: L channel Red: R channel Green: G channel Blue: B channel
Emission nebula signal bands are primarily concentrated at 656nm (Hα), 500.7nm (OIII), and similar wavelengths
Light pollution peaks typically occur near 540nm and 590nm (sodium/mercury lamp bands)
LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

Viktiga funktioner

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

L L Filter (420–690nm): UV/IR cut-off, enhances contrast and sharpness

R R Filter (595–695nm): Emphasizes Hα and SII bands

G G Filter (495–580nm): Suppresses mercury/sodium pollution while transmitting OIII

B B Filter (400–510nm): Captures Hβ and OIII radiation

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

The coating stack combines single-side cut-off coating, front-surface AR coating, and edge blackening to reduce internal reflection and stray light.

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

36mm filters: Feature recessed black ring facing telescope for instant orientation identification
1.25" and 2" filters: Equipped with threaded aluminum frames for direct screw-in installation

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

36mm: Suitable for APS-C and smaller sensor formats

1.25": Suitable for 1-inch and smaller sensor formats

2": Suitable for full-frame and smaller sensor formats

Compatible with industry-standard filter wheels:
36mm: 7-position / 1.25": 8-position / 2": 5-position

ToupTek Astro LRGB Filter Imaging Results

NGC1999

Photographer: voice

Camera: ToupTek ATR2600M

Guide Camera: GPM462M

Telescope: Sky-Watcher F3.4

Mount: UMI

Filters: ToupTek Astro 36mm LRGB&SHO

Exposure: RGB 12×600s each, L 600s×36, Hα 600s×48

Total exposure time: 20 hours

LBN777

Photographer: voice & LiiiiiCo

Camera: ToupTek ATR2600M

Guide Camera: GPM462M

Telescope: Sky-Watcher F3.4

Filters: ToupTek Astro 36mm LRGB&Hα

Mount: UMI

Exposure: RGB 20×600s each, L 600s×60, Hα 1200s×40

Total exposure time: 32 hours

LDN 1532 & IC 2087

Photographer: voice

Camera: ToupTek ATR2600M

Guide Camera: GPM462M

Telescope: Askar FRA400

Mount: UMI

Filters: ToupTek Astro 36mm LRGB&SHO

Exposure: RGB 15×600s each, L 600s×45, Hα 600s×66

Total exposure time: 26 hours

M81 & M82

Photographer: yahushua

Telescope: Askar 130HNT28-AL

Camera: ToupTek Astro ATR585M

Mount: iOptron CEM26

Guide Camera: G3M2210M

Filters: ToupTek Astro 1.25" LRGB & H-alpha

Total exposure time: 14 hours

M81 Individual Channel Single Exposure Examples (300 seconds)

L Channel

R Channel

G Channel

B Channel

Installation Guide

36mm Filters

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

1.25" and 2" Filters

Screw directly into the filter wheel.

Garanti och service

Quality Assurance Testing

Every filter undergoes spectral testing before shipment to verify optical performance consistency.

Warranty Policy

LRGB-filter från ToupTek Astro stöder exakta filterbyten, LRGB- eller smalbandsbildtagning och jämna deep-sky-resultat.

Teknisk support

For assistance, please contact customer service or technical support through our support page:
ToupTek Astro Technical Support

Viktiga anmärkningar

Color Variations: Filter coating colors may appear different under various lighting conditions and viewing angles—this is a normal optical phenomenon.

Produkt Improvements: Specifications and appearance may be updated as part of product refinement. Refer to actual delivered goods.

ToupTek Astro LRGB Filter Set