Optolong 2 Inch L-Pro Light Pollution Filter for Astrophotography - Enhance Night Sky Images with DSLR & Telescope Cameras
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SKU:70267163
Product Description
Optolong L-Pro (L-Professional) is a multi-bandpass filter which selectively suppresses the transmission of light pollution lines. For example, mercury vapor lamps, high and low pressure sodium vapor lights and skyglow caused by emission from neutral oxygen in our atmosphere. L-Pro enhances the transmission of major emissions from nebula while offering great colour balance with its wide yet effective light pollution cutting transmission band. The balanced transmission allows objects with wide emission spectrum such as galaxies to be imaged with minimal colour cast (easier to correct in post-processing). Among the emission lines enhanced are OIII (496, 500nm), H-beta (486nm), NII (654, 658nm), H-alpha (656nm) and SII (672nm).
Product Features
Multi-bandpass light pollution filter for astrophotography
Precise and sharp roll-off at light pollutant emission lines
Very high transmission (~90%) at major nebula emission lines
Multi-layers anti-reflection coating
CNC machined filter cell with aerospace grade aluminium and black anodised finish to extinguish reflections
Customer Reviews
I like the Optolong L-enHance filter a lot, but it is pretty narrow in the Ha and OIII, so sometimes star colors are hard to preserve. This L-Pro filter is a decent compromise for my Bortle 7 suburban skies. I get good contrast in my images and fairly natural colors as well. I think this is a good filter for broadband targets like galaxies, star clusters and some comets. L-enHance is probably better for emission nebula like M57, NGC7000 and the Helix.
