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LRGB Filters

LRGB imaging separates the job of recording detail from the job of recording colour. The luminance channel, unfiltered and deep, carries the structure; the red, green and blue channels supply colour at lower resolution. Done well it produces images sharper than a colour sensor of the same pixel count can reach. David Astro carries LRGB filters in Canada, held in stock for fast domestic shipping.

Set matching matters more than any single filter's specification. Tell us your camera and wheel and we will recommend a set and the sizes it needs.

Filters

CA$426.00 - CA$852.00
CA$426.00 - CA$852.00
CA$426.00 - CA$852.00
CA$426.00

Antlia LRGB-V Pro Filter Set

Options available
8 variants in stock

Four-Filter LRGB Complement Engineered for Monochrome CMOS/CCD Cameras Anti-Reflection Coated Optics Available in 5 Mounted and Unmounted Sizes ...

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CA$426.00 - CA$852.00
CA$426.00 - CA$852.00
CA$426.00 - CA$852.00
CA$426.00
CA$63.00 - CA$152.00
CA$63.00 - CA$152.00
CA$63.00 - CA$152.00
CA$63.00

Baader Clear Focusing Filter

Options available
1 variants in stock

Enables precise focusing for dim narrowband filters Perfectly parfocal with other Baader Planetarium filters Optically polished to ensure no image...

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CA$63.00 - CA$152.00
CA$63.00 - CA$152.00
CA$63.00 - CA$152.00
CA$63.00
CA$134.00 - CA$194.00
CA$134.00 - CA$194.00
CA$134.00 - CA$194.00
CA$134.00

Baader Fringe-Killer Filter

Options available
2 variants in stock

Reduces violet/blue color fringing in achromatic refractors Blocks unfocused near-infrared (NIR) light for sharper digital images Maintains a natu...

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CA$134.00 - CA$194.00
CA$134.00 - CA$194.00
CA$134.00 - CA$194.00
CA$134.00
CA$436.00 - CA$1,216.00
CA$436.00 - CA$1,216.00
CA$436.00 - CA$1,216.00
CA$436.00

Baader LRGB Filter Set - CMOS-Optimized

Options available

Designed specifically to eliminate reflections and halos with modern CMOS sensors Balanced RGB transmission enables simplified 1:1:1 exposure rati...

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CA$436.00 - CA$1,216.00
CA$436.00 - CA$1,216.00
CA$436.00 - CA$1,216.00
CA$436.00
Baader Planetarium RGB B-Filter 1.25" – CMOS-optimized
CA$136.00 - CA$398.00
CA$136.00 - CA$398.00
CA$136.00 - CA$398.00
CA$136.00

Baader Planetarium RGB B-Filter – CMOS-optimized

Options available

Available in 1.25" & 2" Mounted, Round Unmounted and Square Sizes Blue (B) Channel for LRGB Imaging Optimized for Modern CMOS Sensors Designed...

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CA$136.00 - CA$398.00
CA$136.00 - CA$398.00
CA$136.00 - CA$398.00
CA$136.00
Baader Planetarium RGB Filter Set 1.25" – CMOS-optimized
CA$370.00 - CA$1,041.00
CA$370.00 - CA$1,041.00
CA$370.00 - CA$1,041.00
CA$370.00

Baader Planetarium RGB Filter Set – CMOS-optimized

Options available

Set of three Red, Green, and Blue (RGB) filters Optimized for modern CMOS sensors to eliminate reflections Available in 1.25" & 2" mounted, 31...

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CA$370.00 - CA$1,041.00
CA$370.00 - CA$1,041.00
CA$370.00 - CA$1,041.00
CA$370.00
Baader Planetarium RGB G-Filter 1.25" – CMOS-optimized
CA$139.00 - CA$401.00
CA$139.00 - CA$401.00
CA$139.00 - CA$401.00
CA$139.00

Baader Planetarium RGB G-Filter – CMOS-optimized

Options available

Green (G) Component for LRGB Color Imaging Available in 1.25" & 2" Mounted, Round Unmounted and Square Sizes Optimized for Modern CMOS Sensors...

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CA$139.00 - CA$401.00
CA$139.00 - CA$401.00
CA$139.00 - CA$401.00
CA$139.00
Baader Planetarium RGB R-Filter 1.25" – CMOS-optimized
CA$137.00 - CA$399.00
CA$137.00 - CA$399.00
CA$137.00 - CA$399.00
CA$137.00

Baader Planetarium RGB R-Filter – CMOS-optimized

Options available

Red (R) filter for LRGB astrophotography Available in 1.25" & 2" mounted, round unmounted and square sizes Optimized for modern CMOS sensors H...

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CA$137.00 - CA$399.00
CA$137.00 - CA$399.00
CA$137.00 - CA$399.00
CA$137.00
Baader Planetarium FCCT Filter – UV/IR-Cut / L-Filter 2" unmounted (Ø 47,4 mm) – CMOS-optimized
CA$101.00 - CA$357.00
CA$101.00 - CA$357.00
CA$101.00 - CA$357.00
CA$101.00

Baader Planetarium UV/IR-Cut / L-Filter – CMOS-optimized

Options available

Serves as a high-transmission Luminance (L) filter Provides complete Ultraviolet (UV) and Infrared (IR) blocking Engineered with CMOS-optimized an...

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CA$101.00 - CA$357.00
CA$101.00 - CA$357.00
CA$101.00 - CA$357.00
CA$101.00
CA$132.00 - CA$238.00
CA$132.00 - CA$238.00
CA$132.00 - CA$238.00
CA$132.00

Baader Semi-APO Filter

Options available

Reduces chromatic aberration in achromatic refractors Enhances contrast on the Moon, planets, and bright stars Improves star sharpness by tighteni...

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CA$132.00 - CA$238.00
CA$132.00 - CA$238.00
CA$132.00 - CA$238.00
CA$132.00
CA$95.00 - CA$158.00
CA$95.00 - CA$158.00
CA$95.00 - CA$158.00
CA$95.00

Baader UV/IR-CUT / L-Filter CMOS Optimized

Options available
2 variants in stock

Blocks unwanted UV and IR wavelengths for sharper stars Optimized for modern CMOS sensors to prevent star bloat Serves as a high-transmission Lumi...

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CA$95.00 - CA$158.00
CA$95.00 - CA$158.00
CA$95.00 - CA$158.00
CA$95.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Blue Filter

Options available

Blue filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions ...

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CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00
CA$182.00 - CA$525.00
CA$182.00 - CA$525.00
CA$182.00 - CA$525.00
CA$182.00

Chroma Clear Filter

Options available

Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or "back reflections" Transmitted wavefront ...

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CA$182.00 - CA$525.00
CA$182.00 - CA$525.00
CA$182.00 - CA$525.00
CA$182.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Green Filter

Options available

Green filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions...

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CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00
CA$1,085.00 - CA$4,690.00
CA$1,085.00 - CA$4,690.00
CA$1,085.00 - CA$4,690.00
CA$1,085.00

Chroma HaLRGB Filter Set

Options available

8nm H-alpha, Luminance, Red, Green, and Blue astronomy filter set Filters designed for use with CCD and for f/4.0 or slower No reflections leading ...

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CA$1,085.00 - CA$4,690.00
CA$1,085.00 - CA$4,690.00
CA$1,085.00 - CA$4,690.00
CA$1,085.00
CA$735.00 - CA$2,695.00
CA$735.00 - CA$2,695.00
CA$735.00 - CA$2,695.00
CA$735.00

Chroma LRGB Filter Set

Options available

Luminance, Red, Green, and Blue astronomy filter set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image dist...

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CA$735.00 - CA$2,695.00
CA$735.00 - CA$2,695.00
CA$735.00 - CA$2,695.00
CA$735.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Luminance Filter

Options available

Luminance filter for enhancing color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to ima...

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CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Red Filter

Options available

Red filter for color rendering with RGB set Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions o...

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CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00
iOptron LRGB Imaging Filter Kit - 1.25"
CA$307.00 - CA$307.00
CA$307.00
CA$307.00 - CA$307.00
CA$307.00

iOptron LRGB Imaging Filter Kit - 1.25"

IOP-3383-LRGB

Complete LRGB Filter Set Includes Luminance, Red, Green, and Blue Filters Standard 1.25" Filter Size Threaded for Standard Filter Wheels and Acces...

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CA$307.00 - CA$307.00
CA$307.00
CA$307.00 - CA$307.00
CA$307.00
CA$517.00 - CA$797.00
CA$517.00 - CA$797.00
CA$517.00 - CA$797.00
CA$517.00

Optolong LRGB + H-Alpha 7nm Filter Set

Options available

Complete 5-Filter LRGB and H-Alpha Set 7nm H-Alpha Filter Centered at 656.3nm Blocks 589nm Sodium Light Pollution Line High Transmission for Natur...

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CA$517.00 - CA$797.00
CA$517.00 - CA$797.00
CA$517.00 - CA$797.00
CA$517.00
CA$349.00 - CA$503.00
CA$349.00 - CA$503.00
CA$349.00 - CA$503.00
CA$349.00

Optolong LRGB Filter Set

Options available
9 variants in stock

Complete 4-filter LRGB set for monochrome cameras High average transmission of over 90% for maximum signal Blocks sodium light pollution at 589nm ...

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CA$349.00 - CA$503.00
CA$349.00 - CA$503.00
CA$349.00 - CA$503.00
CA$349.00
CA$931.00 - CA$1,413.00
CA$931.00 - CA$1,413.00
CA$931.00 - CA$1,413.00
CA$931.00

Optolong LRGB, Ha, OIII & SII Filter Set

Options available
3 variants in stock

Complete 7-filter set for monochrome astrophotography Includes Luminance, Red, Green, and Blue broadband filters Includes 3nm Hydrogen-alpha, Oxyg...

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CA$931.00 - CA$1,413.00
CA$931.00 - CA$1,413.00
CA$931.00 - CA$1,413.00
CA$931.00
CA$62.00 - CA$91.00
CA$62.00 - CA$91.00
CA$62.00 - CA$91.00
CA$62.00

Optolong UV/IR Cut Filter

Options available
14 variants in stock

Blocks Ultraviolet (UV) and Infrared (IR) wavelengths Improves image sharpness and reduces star bloat Functions as a luminance (L) filter for mono...

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CA$62.00 - CA$91.00
CA$62.00 - CA$91.00
CA$62.00 - CA$91.00
CA$62.00
CA$470.00 - CA$470.00
CA$470.00
CA$470.00 - CA$470.00
CA$470.00

Pegasus Astro LRGB Filter Set - 2"

PEG-FLTR-2M-LRGB

Complete 4-filter LRGB set for broadband deep-sky imaging Standard 2-inch mounted format for wide compatibility Guaranteed 1/4 wavefront optical p...

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CA$470.00 - CA$470.00
CA$470.00
CA$470.00 - CA$470.00
CA$470.00

How an LRGB Set Works Together

The value of a set lies in the relationship between its filters — parfocality, transmission balance and blocking — rather than in each one alone.

  • Luminance: A broad filter blocking ultraviolet and infrared while passing the full visible range, gathering the most photons and therefore carrying the image's detail.
  • Red, green and blue: Colour separation with carefully placed cut-on and cut-off points, so channels do not overlap and colours remain distinguishable.
  • Transmission balance: Sets designed so that near-equal exposure across channels gives neutral star colour, which removes a large amount of processing guesswork.
  • Parfocality: Matched optical thickness so refocusing between filters is minimal, which matters most at fast focal ratios with narrow critical focus zones.
  • UV and IR blocking: Essential in refractors, where unblocked infrared reaches a different focus and bloats stars noticeably.
  • Sizes and mounting: Sized to your sensor diagonal and filter-to-sensor distance, mounted for standard wheels or unmounted to maximize clear aperture.

Why Choose David Astro for LRGB Filters

A mismatched set costs you processing time on every image you ever take with it.

  • Buy the set, not the pieces: We recommend matched sets because transmission balance and parfocality only exist across a designed group, not across mixed brands.
  • Size calculated: We work out the filter size from your sensor diagonal and the distance from filter to sensor, so corners are not vignetted.
  • Spacing accounted for: Filter thickness shifts focus, and we include it in the back-focus calculation supplied with your order.
  • Authorized dealer: Genuine filters with verified coatings and full manufacturer warranty, in Canadian stock.
  • Ships from Canada: No duties or brokerage fees for Canadian buyers.

LRGB Filters in Canada — Frequently Asked Questions

How much luminance versus colour should I shoot?
A common starting ratio is roughly half your total time in luminance and the remainder split across red, green and blue. Colour data can be binned or shot in poorer conditions since it carries less detail.
Do I need UV and IR blocking?
In a refractor, yes — a doublet or triplet does not focus infrared with the visible range, and unblocked IR bloats stars. In a reflector it matters less, but a blocking luminance filter is still standard practice.
Can I mix filters from different sets?
You can, but you lose the transmission balance and parfocality that make a designed set convenient. Expect more colour calibration work and per-filter focus offsets.
Is LRGB better than one-shot colour?
It resolves more detail for a given sensor and allows narrowband later, at the cost of roughly three to four times the imaging time per target and a filter wheel in the train.

Moving to monochrome imaging?

Tell us your camera and wheel and we will specify the set and sizes. Ships from Canada, full warranty.