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Chroma

Chroma filters are made for people who have already eliminated every other variable in their imaging and want the filter to stop being one. Hard-coated sputtered layers on high-quality substrates give very steep transitions, excellent blocking and — the characteristic imagers notice most — an absence of halos around bright stars. David Astro carries Chroma products in Canada, stocked in Canada and shipped worldwide.

These are premium components and worth specifying carefully. Tell us your camera, wheel and focal ratio and we will size and select precisely.

Filters

CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00

Chroma B-Bessell Filter

Standard B-Bessell photometric filter for UBVRI measurements 3.0 mm thick substrate, parfocal with other Chroma astronomy filters Transmitted wave...

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CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Blue Filter

Blue broadband filter for LRGB color imaging 3.0 mm thick substrate, parfocal with other Chroma astronomy filters Transmitted wavefront better tha...

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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

Maintains parfocal focus with other 3.0mm Chroma filters Precision 3.0 mm glass substrate thickness Transmitted wavefront better than 0.25 waves/i...

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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

Captures the green portion of the visible spectrum for LRGB imaging 3.0 mm thick glass substrate ensures parfocal performance with other Chroma fi...

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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$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma H-alpha Filter - 3nm

Isolates the 656.3 nm Hydrogen-alpha emission line 3 nm bandpass for high contrast against skyglow and light pollution Designed for imaging system...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00

Chroma H-alpha Filter - 5nm

5nm Bandwidth (FWHM) Centered on the 656.3 nm H-alpha Emission Line Designed for f/4.0 or Slower Telescopes 3.0 mm Thick Parfocal Substrate Transm...

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CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00

Chroma H-alpha Filter - 8nm

8nm Bandwidth (FWHM) Centered on 656.3 nm H-alpha Line 3.0 mm Parfocal Substrate Durable Sputtered Hard Coatings Transmitted Wavefront Better Than...

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CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma H-alpha Filter Optimized for f/3 - 3nm

Isolates the 656.3 nm Hydrogen-alpha emission line 3 nm bandpass for maximum contrast Optimized for f/2.8 to f/3.6 optical systems Peak transmissi...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma H-beta Filter - 3nm

Isolates the Hydrogen-beta emission line at 486.1 nm Narrow 3 nm bandpass for high contrast Designed for f/4.0 or slower optical systems 3.0 mm th...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00

Chroma H-beta Filter - 5nm

Central Wavelength: 486.1 nm (Hydrogen-beta) Bandwidth: 5 nm FWHM Glass Thickness: 3.0 mm Parfocal with other Chroma astronomy filters (except LoG...

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CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00
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

Complete 5-Filter Set: Luminance, Red, Green, Blue, and H-alpha H-alpha Bandwidth Options: Available in 3nm, 5nm, or 8nm variants Substrate Thickn...

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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$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00

Chroma I-Bessell Filter

Standard I-Bessell filter for scientific photometry Durable sputtered hard coatings on a single substrate 3.0 mm substrate, parfocal with other Ch...

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CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00
CA$385.00 - CA$1,106.00
CA$385.00 - CA$1,106.00
CA$385.00 - CA$1,106.00
CA$385.00

Chroma Jovian Methane Filter

Reveals high-altitude atmospheric features on Jupiter and Saturn Targets the methane absorption band Parfocal with other 3.0mm Chroma astronomy fi...

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CA$385.00 - CA$1,106.00
CA$385.00 - CA$1,106.00
CA$385.00 - CA$1,106.00
CA$385.00
CA$385.00 - CA$770.00
CA$385.00 - CA$770.00
CA$385.00 - CA$770.00
CA$385.00

Chroma LoGlow Filter

Blocks common spectral lines from metal-halide and vapor lamps Designed for balanced color in broadband imaging Designed for telescopes at f/4.0 a...

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CA$385.00 - CA$770.00
CA$385.00 - CA$770.00
CA$385.00 - CA$770.00
CA$385.00
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

Complete four-filter Luminance, Red, Green, and Blue set Engineered for systems f/4.0 and slower Parfocal 3.0 mm thick substrates Transmitted wave...

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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

Captures the full visible spectrum for high-resolution LRGB imaging 3.0 mm substrate, parfocal with other Chroma astronomy filters (except LoGlow)...

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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$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma OIII Filter - 3nm

Isolates the 500.7 nm OIII emission line 3 nm bandpass for high contrast Designed for f/4.0 or slower optical systems 3.0 mm thick, single-substra...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00

Chroma OIII Filter - 5nm

Isolates the 500.7nm OIII emission line 5nm bandwidth (FWHM) 3.0mm thick single substrate for parfocal use Transmitted wavefront better than 0.25 ...

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CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00

Chroma OIII Filter - 8nm

Isolates the 500.7nm OIII emission line 8nm bandpass for high signal throughput Designed for f/4.0 or slower; measured 99.7% peak transmission at ...

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CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00 - CA$1,162.00
CA$385.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma OIII Filter Optimized for f/3 - 3nm

Isolates the 500.7 nm OIII emission line 3 nm bandpass for high-contrast imaging Optimized for f/2.8 to f/3.6 optical systems Measured 99.2% peak ...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00

Chroma R-Bessell Filter

Standardized R-Bessell band for scientific photometry 3.0 mm thick substrate, parfocal with other Chroma astronomy filters (except LoGlow) Transmi...

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CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00 - CA$1,015.00
CA$385.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00 - CA$700.00
CA$210.00

Chroma Red Filter

Captures the red portion of the visible spectrum for LRGB color imaging 3.0 mm substrate, parfocal with other Chroma astronomy filters (except LoG...

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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$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00

Chroma SII Filter - 3nm

Central Wavelength: 672.4 nm (Sulfur-II) Bandwidth (FWHM): 3 nm Substrate Thickness: 3.0 mm Parfocal: Yes, with other Chroma astronomy filters...

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CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00 - CA$2,170.00
CA$805.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00

Chroma SII Filter - 5nm

Bandwidth: 5 nm Central Wavelength: 672.4 nm Target Emission: Sulfur-II Doublet (671.6 nm / 673.1 nm) Substrate Thickness: 3.0 mm Parfocal: Y...

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CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00 - CA$1,932.00
CA$644.00

What Distinguishes Chroma Filters

The differences are in coating technology and substrate quality, and they show up in the parts of an image people spend the most time fixing in processing.

  • Hard-coated sputtered layers: Dense, durable coatings that do not degrade with humidity and give very steep band edges, so out-of-band light is rejected sharply.
  • Halo suppression: Substrate and coating design that minimizes internal reflection between the filter and the sensor window, which is what causes the rings around bright stars.
  • Narrowband Ha, OIII and SII: Several bandwidths, with the narrower options giving exceptional contrast in systems slower than about f/4.
  • LRGB sets: Balanced transmission across channels with tight parfocality, reducing both processing effort and per-filter focus offsets.
  • Substrate flatness: High optical flatness so the filter does not introduce wavefront error, which matters more as sensors and apertures grow.
  • Sizes for large sensors: Formats sized to keep full-frame and larger chips free of filter-edge vignetting.

Why Choose David Astro for Chroma

At this price level, specification errors are expensive, so we check them before you order.

  • Size calculated, not assumed: We compute the required filter size from your sensor diagonal and filter-to-sensor distance, so the corners stay clean.
  • Bandwidth matched to focal ratio: We advise against the narrowest bandwidth in very fast systems, where the passband shift would cost more signal than the contrast gains.
  • Spacing and offsets handled: Filter thickness is included in your back-focus calculation, and we help configure per-filter focus offsets.
  • Authorized dealer: Genuine Chroma filters with full manufacturer warranty and verified coatings, in Canadian stock.
  • Ships from Canada: No duties or brokerage fees for Canadian buyers.

Chroma in Canada — Frequently Asked Questions

Why do premium filters reduce halos?
Halos come from light reflecting between filter surfaces and the sensor window. Coating design, substrate quality and precise band placement all reduce that reflection, which is a large part of what you are paying for.
Is 3 nm always better than 5 nm?
Not in fast systems. Below roughly f/4, the steep light cone shifts a very narrow passband off the emission line and you lose signal. At f/5 and slower, 3 nm gives noticeably better contrast under light pollution.
Do hard coatings really last longer?
Sputtered hard coatings are dense and non-hygroscopic, so they resist humidity and cleaning far better than soft-coated filters, which can degrade over years of Canadian temperature and humidity cycling.
What size do I need?
It depends on sensor diagonal and how far the filter sits from the sensor, not on the sensor alone. Send us your camera and wheel and we will calculate it.

Upgrading your filters?

Send us your camera, wheel and focal ratio and we will specify precisely. Ships from Canada, full warranty.