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Narrowband filters for telescopes

Narrowband filters for telescopes are an essential tool for astrophotographers who want to capture precise details of the deep sky. These filters allow only a very specific range of wavelengths to pass through, corresponding to the specific emissions of hydrogen, oxygen, or sulfur.

By using narrowband filters, you can isolate the emissions from nebulae and other celestial objects, while blocking stray light and light pollution. This greatly improves contrast and reveals fine structures that are invisible in natural light. Hα, OIII, and SII filters are the most common and can be combined to create Hubble palette (SHO) images, offering spectacular colors and exceptional detail.

Whether you are an advanced amateur or an experienced astrophotographer, narrowband filters for telescopes optimize your acquisitions by enabling accurate tracking and high-quality long exposures. 

Explore our selection of narrowband filters to get the most out of your astrophotography sessions and reveal the hidden beauty of nebulae and the deep sky. Discover other types of telescope filters such as our multiband and broadband filters, imaging filters, and color filters on our website.

Filters
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Optolong SHO 3nm Narrowband Filters Kit - Astronomy Plus
Optolong SHO 3nm Narrowband Filters Kit - Astronomy Plus Save up to $4.00 Save $0.00
$1,679.00
$1,340.00 - $1,679.00
$1,679.00
$1,340.00 - $1,675.00
$1,340.00 - $1,675.00
$1,340.00

Optolong SHO 3nm Narrowband Filters Kit

Optolong

Optolong SHO 3nm Narrowband Filters Kit Optolong SHO-3nm Narrowband Filters Introduction Optolong SHO-3nm filter kit includes SII 3nm, H-Alpha 3nm,...

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$1,679.00
$1,340.00 - $1,679.00
$1,679.00
$1,340.00 - $1,675.00
$1,340.00 - $1,675.00
$1,340.00
Save up to $4.00 Save $0.00
Optolong Narrowband H-Beta filter - Astronomy Plus
$124.00 - $194.00
$124.00 - $194.00
$124.00 - $194.00
$124.00

Optolong Narrowband H-Beta filter

Optolong

Optolong Narrowband H-Beta filter Opotlong narrowband H-beta filter is designed for nebula observation allowing 12nm bandwidth of light centered on...

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$124.00 - $194.00
$124.00 - $194.00
$124.00 - $194.00
$124.00
IDAS SHO Narrowband Set - Astronomy Plus Save up to $695.00 Save $0.00
$1,395.00
$1,182.00 - $1,395.00
$1,395.00
$700.00 - $1,395.00
$700.00 - $1,395.00
$700.00

IDAS SHO Narrowband Set

IDAS

IDAS SHO Narrowband Set (SII, H-a & OIII) IDAS H-alpha 6.8nm. OIII 6.0nm and SII 6.3nm Sets. Available at various sizes and classifications –...

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$1,395.00
$1,182.00 - $1,395.00
$1,395.00
$700.00 - $1,395.00
$700.00 - $1,395.00
$700.00
Save up to $695.00 Save $0.00
Astronomik H-Beta Filter - Astronomy Plus
Astronomik H-Beta Filter - Astronomy Plus
$135.00 - $312.00
$135.00 - $312.00
$135.00 - $312.00
$135.00

Astronomik H-Beta Filter

Astronomik

Astronomik H-Beta Filter The Astronomik H-beta is a filter for visual observation, in particular with instruments of larger aperture. It lets the l...

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$135.00 - $312.00
$135.00 - $312.00
$135.00 - $312.00
$135.00
Chroma 8nm SII Filter - Astronomy Plus
Chroma 8nm SII Filter - Astronomy Plus
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00

Chroma 8nm SII Filter

Chroma

Chroma 8nm SII Filter The Chroma 8nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

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$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00
Chroma 5nm SII Filter - Astronomy Plus
Chroma 5nm SII Filter - Astronomy Plus
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00

Chroma 5nm SII Filter

Chroma

Chroma 5nm SII Filter The Chroma 5nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

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$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00
Chroma 5nm H-Beta Filter - Astronomy Plus
Chroma 5nm H-Beta Filter - Astronomy Plus
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00

Chroma 5nm H-Beta Filter

Chroma

Chroma 5nm H-beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

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$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00
Chroma 3nm H-Beta Filter - Astronomy Plus
Chroma 3nm H-Beta Filter - Astronomy Plus
$805.00 - $2,170.00
$805.00 - $2,170.00
$805.00 - $2,170.00
$805.00

Chroma 3nm H-Beta Filter

Chroma

Chroma 3nm H-Beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

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$805.00 - $2,170.00
$805.00 - $2,170.00
$805.00 - $2,170.00
$805.00
Chroma 8nm H-alpha Filter - Astronomy Plus
Chroma 8nm H-alpha Filter - Astronomy Plus
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00

Chroma 8nm H-alpha Filter

Chroma

Chroma 8nm H-alpha Filter The Chroma 8nm H-alpha Filter is essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 6...

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$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00
Chroma 5nm OIII Filter - Astronomy Plus
Chroma 5nm OIII Filter - Astronomy Plus
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00

Chroma 5nm OIII Filter

Chroma

Chroma 5nm OIII Filter The Chroma 5nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

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$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00 - $1,932.00
$644.00
Chroma 8nm OIII Filter - Astronomy Plus
Chroma 8nm OIII Filter - Astronomy Plus
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00

Chroma 8nm OIII Filter

Chroma

Chroma 8nm OIII Filter The Chroma 8nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

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$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00 - $1,162.00
$385.00
Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized - Astronomy Plus
Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized - Astronomy Plus
$270.00 - $634.00
$270.00 - $634.00
$270.00 - $634.00
$270.00

Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized

Baader Planetarium

Baader H-Beta Narrowband-Filter (5.5nm) – CMOS-optimized Baader H-Beta Narrowband Filter – Precision Grade 5.5 nm FWHM, recommended for optical sy...

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$270.00 - $634.00
$270.00 - $634.00
$270.00 - $634.00
$270.00
Celestron 2" Oxygen III Narrowband Filter (93624) - Astronomy Plus
Save $70.00 Save $0.00
$170.00
$170.00 - $170.00
$170.00
$100.00
$100.00 - $100.00
$100.00

Celestron 2" Oxygen III Narrowband Filter (93624)

Celestron

Celestron 2" Oxygen III Narrowband Filter The 2" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emi...

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$170.00
$170.00 - $170.00
$170.00
$100.00
$100.00 - $100.00
$100.00
Save $70.00 Save $0.00
Optolong H-Alpha 7nm Narrowband Filter - Astronomy Plus
$222.00 - $320.00
$222.00 - $320.00
$222.00 - $320.00
$222.00

Optolong H-Alpha 7nm Narrowband Filter

Optolong

Optolong H-Alpha 7nm Narrowband Filter Optolong improved version of H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of l...

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$222.00 - $320.00
$222.00 - $320.00
$222.00 - $320.00
$222.00
Optolong SII 6.5nm Imaging Narrowband Filter - Astronomy Plus
$222.00 - $320.00
$222.00 - $320.00
$222.00 - $320.00
$222.00

Optolong SII 6.5nm Imaging Narrowband Filter

Optolong

Optolong SII 6.5nm Imaging Narrowband Filter Optolongimproved narrowband SII6.5nm filter (Sulful II for CCD) is designed for nebula observation all...

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$222.00 - $320.00
$222.00 - $320.00
$222.00 - $320.00
$222.00
Optolong Improved NB Filters SHO 6.5nm Narrowband Filter Kit - Astronomy Plus
$665.00 - $937.00
$665.00 - $937.00
$665.00 - $937.00
$665.00

Optolong Improved NB Filters SHO 6.5nm Narrowband Filter Kit

Optolong

Optolong NB Filters SHO 6.5nm Narrowband Filter Kit Optolong SHO6.5nm filter kit includes SII6.5nm, H-Alpha7nm, and OIII6.5nm narrow-band filters, ...

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$665.00 - $937.00
$665.00 - $937.00
$665.00 - $937.00
$665.00
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