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Chroma

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-Bessel Filter

Options available

Blue photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""...

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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

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$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

Options available

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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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

Options available

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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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

Options available

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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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

Options available

H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter i...

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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

Options available

H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

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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

Options available

H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter is required to separate H...

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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

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$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-Bessel Filter

Options available

NIR photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""b...

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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

Options available

Methane absorption band filter. This filter enhances contrast when imaging objects containing significant levels of methane. Methane-rich component...

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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

Options available

Blocks common spectral lines from lighting sources. This filter provides balanced color for the visible spectrum while blocking most emission from ...

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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

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$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

Options available

Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

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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

Options available

Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

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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

Options available

Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

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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

Options available

Chroma’s OIII filters isolate the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the next most common emission when...

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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-Bessel Filter

Options available

Red photometric filter in UVBRI series Filters designed for use with CCD and for f/4.0 or slower No reflections leading to image distortions or ""b...

View full details
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

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
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

Options available

SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

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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

Options available

SII filters isolate the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is at two lines occurring as a doublet, ...

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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.