Skip to content

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
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00

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...

View full details
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00
Explore Scientific Nebula Filter S-II 2-inch 12nm
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00

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...

View full details
CA$350.00 - CA$350.00
CA$350.00
CA$350.00 - CA$350.00
CA$350.00
Explore Scientific Nebula Filter H-Alpha 2-inch 7nm
CA$420.00 - CA$420.00
CA$420.00
CA$420.00 - CA$420.00
CA$420.00

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...

View full details
CA$420.00 - CA$420.00
CA$420.00
CA$420.00 - CA$420.00
CA$420.00
Explore Scientific Nebula Filter S-II 2-inch 6.5nm
CA$420.00 - CA$420.00
CA$420.00
CA$420.00 - CA$420.00
CA$420.00

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...

View full details
CA$420.00 - CA$420.00
CA$420.00
CA$420.00 - CA$420.00
CA$420.00
Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm
CA$224.00 - CA$224.00
CA$224.00
CA$224.00 - CA$224.00
CA$224.00

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...

View full details
CA$224.00 - CA$224.00
CA$224.00
CA$224.00 - CA$224.00
CA$224.00
Explore Scientific Nebula Filter S-II 1.25-inch 12nm
CA$224.00 - CA$224.00
CA$224.00
CA$224.00 - CA$224.00
CA$224.00

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...

View full details
CA$224.00 - CA$224.00
CA$224.00
CA$224.00 - CA$224.00
CA$224.00
Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm
CA$280.00 - CA$280.00
CA$280.00
CA$280.00 - CA$280.00
CA$280.00

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...

View full details
CA$280.00 - CA$280.00
CA$280.00
CA$280.00 - CA$280.00
CA$280.00