|Filter Type||H Alpha|
Light Pollution Filters, Optolong Filters
OPTOLONG 36MM H-ALPHA 7NM FILTER
₹15,290.00 excl. 18% GST
- H-alpha 7nm 36mm Filter
- A threaded version of this filter is pictured. Actual product is a 36mm unmounted filter
- A very narrow emission-line filter
- Permits a 7nm bandwidth of light (focused on the 656nm wavelength) through
- Blocks transmission of contrast-killing light pollution wavelengths
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