Product description
H-alpha filter passes light at 656nm wavelength. 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,
$399.00 Original price was: $399.00.$99.99Current price is: $99.99.

H-alpha filter passes light at 656nm wavelength. 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,
| Central wavelength(nm) | 656,3 |
|---|---|
| Half-value width(nm) | 3,5 |
| Frame | Frames |
| Mount material | Aluminium |
| Coating of optical system | Reflex-Blocker™ |
| Appropriate for... | f/3.4 – f/1.8 |
| filter thickness(mm) | 2 |
| Filter Size(mm) | 50 x 50 |
| Type | Filters Filters No matter whether they are for observing or for astrophotography, filters are very important accessories.Click to read more… |
| Type of build | line filter Line filter Filters that allow only light in a specific spectral line to pass through.Click to read more… |
| Series | f/2 Ultra-Highspeed f/2 Ultra-Highspeed Emission line filter with very narrow full width at half maximum for extremely fast optical systemsClick to read more… |
| Useful for photographs | yes |
| Visually useful | no |
| Twin stars | no |
| Moon & Planets | no |
| Nebulae & galaxies | yes |
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