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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.

Explore Scientific Narrowband Filters

Explore Scientific narrowband filters are Nebula Filters that pass a single emission line and block most light pollution and moonlight. The range covers H-Alpha and S-II filters with 6.5nm, 7nm or 12nm bandwidths, in 1.25-inch and 2-inch sizes.

They are mainly used for emission nebula imaging with a monochrome astronomy camera. The 12nm versions are more forgiving on fast optics, while 6.5nm and 7nm filters give stronger contrast from bright suburban skies.

Filters

Explore Scientific Nebula Filter H-Alpha 2-inch 12nm
$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99

Explore Scientific Nebula Filter H-Alpha 2-inch 12nm

ES-310130

Isolates the Hydrogen-alpha emission line at a 12nm bandpass Standard 2-inch filter format for modern focusers and filter wheels Dramatically incr...

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$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99
Explore Scientific Nebula Filter S-II 2-inch 12nm
$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99

Explore Scientific Nebula Filter S-II 2-inch 12nm

ES-310110

Isolates the 672nm Sulfur-II (S-II) emission line 12nm bandpass for high-contrast views 2-inch filter size with standard threads Blocks light poll...

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$249.99 - $249.99
$249.99
$249.99 - $249.99
$249.99
Explore Scientific Nebula Filter H-Alpha 2-inch 7nm
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific Nebula Filter H-Alpha 2-inch 7nm

ES-310140

7nm H-Alpha Bandpass 2-inch Filter Format Isolates Hydrogen Emission Nebulae Blocks Urban Light Pollution Includes Individual Test Report Descr...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific Nebula Filter S-II 2-inch 6.5nm
$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99

Explore Scientific Nebula Filter S-II 2-inch 6.5nm

ES-310120

6.5nm Narrow Bandpass Targets the 672nm Ionized Sulfur (S-II) Emission Line 2-inch Barrel Diameter for Larger Focusers Drastically Increases Contr...

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$299.99 - $299.99
$299.99
$299.99 - $299.99
$299.99
Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm
$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99

Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm

ES-310135

Targets Hydrogen-Alpha emission nebulae 12nm bandpass for astrophotography 1.25-inch standard filter size Drastically improves contrast under ligh...

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$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
Explore Scientific Nebula Filter S-II 1.25-inch 12nm
$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99

Explore Scientific Nebula Filter S-II 1.25-inch 12nm

ES-310115

Isolates the ionized sulfur (S-II) emission line at 672nm Features a 12nm bandpass to increase contrast Standard 1.25-inch filter format Ideal for...

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$159.99 - $159.99
$159.99
$159.99 - $159.99
$159.99
Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm
$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99

Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm

ES-310125

Isolates the ionized sulfur (S-II) emission line at 672nm Ultra-narrow 6.5nm bandpass for maximum contrast Standard 1.25-inch barrel size fits mos...

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$199.99 - $199.99
$199.99
$199.99 - $199.99
$199.99