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IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.
IMPORTANT: Our store is located in Canada. All orders that include products manufactured outside of Canada or USA will be subject to tariffs and duties, regardless of the order value. US customers are responsible for all applicable duties and tariffs, and those will be billed by the carrier, except for the Lacerta upgrade kit, for which we collect them at checkout.

Optolong Narrowband Filters

Optolong narrowband filters isolate single emission lines for imaging nebulae with a monochrome astronomy camera, even from bright city skies. The range covers H-alpha, OIII and SII filters in 3nm and in 6.5nm or 7nm bandwidths, plus sets: Ha, OIII and SII 3nm, Ha 7nm with OIII and SII 6.5nm, and LRGB sets with H-alpha or with all three narrowband lines.

The 3nm filters give the highest contrast, while 6.5nm and 7nm versions are more forgiving of fast optics.

Filters

$665.00 - $1,009.00
$665.00 - $1,009.00
$665.00 - $1,009.00
$665.00

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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$665.00 - $1,009.00
$665.00 - $1,009.00
$665.00 - $1,009.00
$665.00
Optolong Ha 7nm, OIII 6.5nm & SII 6.5nm Filter Set
$465.00 - $669.00
$465.00 - $669.00
$465.00 - $669.00
$465.00

Optolong Ha 7nm, OIII 6.5nm & SII 6.5nm Filter Set

Options available

H-alpha Filter: 7nm Bandpass centered at 656nm Oxygen-III Filter: 6.5nm Bandpass centered at 500nm Sulphur-II Filter: 6.5nm Bandpass Hubble Pa...

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$465.00 - $669.00
$465.00 - $669.00
$465.00 - $669.00
$465.00
$369.00 - $569.00
$369.00 - $569.00
$369.00 - $569.00
$369.00

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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$369.00 - $569.00
$369.00 - $569.00
$369.00 - $569.00
$369.00
Optolong OIII 6.5nm Narrowband Filter
$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00

Optolong OIII 6.5nm Narrowband Filter

Options available
3 variants in stock

6.5nm Narrowband OIII Filter Centered on 500nm Wavelength Captures both 495.9nm and 500.7nm Emission Lines Blocks Light Pollution and Skyglow Idea...

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$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00
Optolong SII 6.5nm Narrowband Filter
$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00

Optolong SII 6.5nm Narrowband Filter

Options available
3 variants in stock

Isolates the Sulfur-II (SII) emission line at 672nm Tight 6.5nm bandpass for maximum contrast Enables imaging in heavily light-polluted skies and ...

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$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00
Optolong H-Alpha 7nm Narrowband Filter
$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00

Optolong H-Alpha 7nm Narrowband Filter

Options available
3 variants in stock

Isolates the 656nm Hydrogen-alpha emission line 7nm bandpass for maximum contrast Blocks mercury vapor, sodium vapor, and natural skyglow Ideal fo...

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$159.00 - $229.00
$159.00 - $229.00
$159.00 - $229.00
$159.00
Optolong Ha, OIII & SII 3nm Narrowband Filter Set
$960.00 - $1,199.00
$960.00 - $1,199.00
$960.00 - $1,199.00
$960.00

Optolong Ha, OIII & SII 3nm Narrowband Filter Set

Options available

Complete SHO set includes H-alpha, OIII, and SII filters Ultra-narrow 3nm bandpass for maximum contrast Isolates 656nm Ha and 500nm OIII emission ...

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$960.00 - $1,199.00
$960.00 - $1,199.00
$960.00 - $1,199.00
$960.00
Optolong OIII 3nm Narrowband Filter
$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00

Optolong OIII 3nm Narrowband Filter

Options available
1 variants in stock

3nm Spectral Bandpass 500nm Central Wavelength (OIII) Ion-Assisted Multi-Layer Coatings Optimized for Monochrome Cameras Available in 2" Mounted o...

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$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00
Optolong SII 3nm Narrowband Filter
$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00

Optolong SII 3nm Narrowband Filter

Options available
1 variants in stock

Isolates the Sulfur-II (SII) emission line for astrophotography Extremely narrow 3nm bandpass for maximum contrast Drastically reduces skyglow and...

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$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00
$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00

Optolong H-alpha 3nm Narrowband Filter

Options available
1 variants in stock

3nm Bandpass at 656nm Wavelength Maximizes Contrast for Emission Nebulae Extreme Rejection of Light Pollution and Skyglow Ion-Assisted, Anti-Refle...

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$339.00 - $419.00
$339.00 - $419.00
$339.00 - $419.00
$339.00