The ZWO Hydrogen Alpha (H-Alpha) bandpass filter is suitable for viewing of faint emission nebula of H-Alpha line in full moonlight or in severe light pollution.
Emission nebulas are clouds of glowing gas, which only emit light at discreet wavelengths which require filters for improved viewing and photographing. The strongest emission wavelength in a hydrogen nebula is in the deep red part of the spectrum known as the hydrogen-alpha line at 656nm.
Key features:
Original price was: $269.00.$239.00Current price is: $239.00. inc GST
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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, just prepare to experience the infinite fun with it.
Use it with Oxygen-III and S-II narrowband filters Set for tricolor CCD astrophotography.
Narrowband imaging with the full set (H-alpha, OIII-CCD and SII-CCD) of filters can be done with the moon visible and in heavy light pollution, so your equipment is not sitting dormant for several weeks
| Size: | 36 mm |
| Shape: | Round (unmounted) |
| Thickness: | 2.0 mm |
| Package: | Plastic case |
| Transmission at 656nm (H-Alpha) | 90% |
| Infrared wavelength: | 700 – 1100nm cut off |
| FWHM: | 7±0.5nm |
| In the box: | 36mm Hydrogen Alpha Filter |
