1.25 inch suits the new ZWO 8 position 1.25 inch Filterwheel

31mm unmounted suits the new ZWO 8 position 31mm Filterwheel

36mm unmounted suits the new  ZWO 7 position 36mm Filterwheel

Technical Parameter:

Name: ZWO narrowband 31mm filter

Size: D=31mm

Thickness: 2mm

The ZWO  H-Alpha filter  has a bandpass of  7nm and passes light at 656nm  wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution.

31mm HA
31mm HA

The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.

31mm SII
31mm SII

The ZWO nrrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm through,  which corresponds to OIII emission lines, blocking out all other light.  Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favorite nebulas in a totally new light, no matter how polluted your skies may be!

31mm OIII
31mm OIII

Filter Orientation

You can judge which side faces the camera by the color like below:

New Ha filter:

 

New SII filter:

For New OIII filter ,Old Ha/SII/OIII filter:

  1. Lay the filter down flat;
  2. Put a pen on the top of it ;
  3. if you can see two shadow, this side has anti-reflective coating, and it should face to the camera.4. if you can only see one shadow, this side has multilayer coating, and should face to the telescope.

Technical Data

  • FWHM:7±0.5nm
  • Glass Thickness 2.0+/-0.03 mm  (1.25”/31mm/36mm)
  • Fine-optically polished to ensure accurate 1/4 wavefront  over the both surfaces
  • About 90% transmission at H-alpha line 656nm (H-Alpha filter )
  • About 90% transmission at SII line 672nm (SII filter )
  • About 90% transmission at major OIII line 500nm (OIII filter )
  • Infrared wavelength 700-1100nm cut-off
  • <0.1% transmission of off-band, OD3(Optical Density)

Transmission Curve

NB Transmission
NB Transmission

Image Test:

Here is a test of ZWO Ha Filters (ASI1600 mono camera, single frame, 300s, DDP in MaximD)

Reviews

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ZWO New Narrowband Filter Set 7nm

SKU: N/A

$639.00$1,199.00

✅ Expert Advice
✅ Australian Owned
✅ Lifetime Technical Support

    Need Expert Advice?

    Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

    Enquire now or call us (03) 9042 2293

    ZWO New Narrowband Filter Set 7nm

    SKU: N/A

    $639.00$1,199.00

    1.25 inch suits the new ZWO 8 position 1.25 inch Filterwheel

    31mm unmounted suits the new ZWO 8 position 31mm Filterwheel

    36mm unmounted suits the new  ZWO 7 position 36mm Filterwheel

    Technical Parameter:

    Name: ZWO narrowband 31mm filter

    Size: D=31mm

    Thickness: 2mm

    The ZWO  H-Alpha filter  has a bandpass of  7nm and passes light at 656nm  wavelength, light transmission rate comes up to 80%. Best choice of narrowband H-alpha astrophotography filter for high-contrast imaging and revealing rich details of the nebula even in areas with strong light pollution.

    31mm HA
    31mm HA

    The ZWO narrowband S-II 7nm filter passes light at 672nm wavelength with a bandpass of 7nm which is designed for nebula observation . It is suitable for visual observation on most emission nebulae, planetary nebulae and supernova remnants, use it with H-alpha and OIII narrowband filters (SHO Set) for tricolor CCD astrophotography.

    31mm SII
    31mm SII

    The ZWO nrrowband O-III 7nm filter is designed for nebula observation allowing 7nm bandwidth of light centered on a wavelength of 500nm through,  which corresponds to OIII emission lines, blocking out all other light.  Adding the ZWO O-III Narrowband filter to your imaging collection will help you go beyond the RGB imaging and will help capture your favorite nebulas in a totally new light, no matter how polluted your skies may be!

    31mm OIII
    31mm OIII

    Filter Orientation

    You can judge which side faces the camera by the color like below:

    New Ha filter:

     

    New SII filter:

    For New OIII filter ,Old Ha/SII/OIII filter:

    1. Lay the filter down flat;
    2. Put a pen on the top of it ;
    3. if you can see two shadow, this side has anti-reflective coating, and it should face to the camera.4. if you can only see one shadow, this side has multilayer coating, and should face to the telescope.

    Technical Data

    • FWHM:7±0.5nm
    • Glass Thickness 2.0+/-0.03 mm  (1.25”/31mm/36mm)
    • Fine-optically polished to ensure accurate 1/4 wavefront  over the both surfaces
    • About 90% transmission at H-alpha line 656nm (H-Alpha filter )
    • About 90% transmission at SII line 672nm (SII filter )
    • About 90% transmission at major OIII line 500nm (OIII filter )
    • Infrared wavelength 700-1100nm cut-off
    • <0.1% transmission of off-band, OD3(Optical Density)

    Transmission Curve

    NB Transmission
    NB Transmission

    Image Test:

    Here is a test of ZWO Ha Filters (ASI1600 mono camera, single frame, 300s, DDP in MaximD)

    Reviews

    There are no reviews yet

    Be the first to review “ZWO New Narrowband Filter Set 7nm”

    Your email address will not be published. Required fields are marked *

      Need Expert Advice?

      Visual Astronomy, Astrophotography, Microscopy and Macro Photography can be a little complicated sometimes as there are a lot of options. If you'd like to check something before you purchase just let us know and we'd be happy to help!

      Enquire now or call us (03) 9042 2293