ZWO Ha 36mm Unmounted Narrowband Filter

Technical Parameter:

Name: ZWO New narrowband 36mm filter

Size: D=36mm

Thickness: 2mm

The ZWO H-Alpha filter has a bandpass of 7nm and passes light at 656nm wavelength, the 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, just prepare to experience the infinite fun with it!

ZWO Ha 36mm Unmounted Narrowband Filter ZWO-Ha7nmD36

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.

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 new light, no matter how polluted your skies may be!

Hubble look of images can be made by the combination of H-alpha, OIII-CCD, and SII-CCD, such as the famous “Pillars of Creation” (M16 Eagle Nebula)
Narrowband imaging with SHO set (H-alpha, OIII-CCD, and SII-CCD) can be done with the moon up in heavy light pollution, so your equipment is not sitting dormant for several weeks

H-alpha filter is the first narrowband addition to the LRGB set for most imagers who blend a black-and-white Ha image into RGB data to enhance structural detail while maintaining natural look

New OIII filter:

Both sides will be fine.