- Description
- Specifications
The L-Pro (L-Professional) filter is best light pollution filter with multi-bandpass filter which offers better color balance by maximizing the transmission band. By selectively reducing the transmission of wavelengths of light pollutants, specifically those produced by artificial lightings including mercury vapor lamps, both high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emission in our atmosphere (i.e. skyglow). Together with the highly transparent in main nebula emission lines at OIII(496nm and 500nm), H-beta (486nm), NII(654nm and 658nm). It is suitable for enhancing the contrast and details for both visual and photograghic purpose at sub-rural area with heavy light pollution.
Check out Trevor's review of the L-Pro from Optolong
Specifications
- Tpeak: T>90%
- Spectrum: 380-750nm
- Optical Density: Light pollution emission is blocked 90%
- Surface Quality: 60/40
- Transmitted Wavefront RMS: ?/4
- Parallelism (arcsec): 30s
You may also like
Recently viewed
Recent Blog Posts
View all
Your Guide Graph Is Lying to You
You drove ninety minutes to dark sky, PHD2 held 0.4 arcseconds all night, and half your subs still have eggs for stars. Here are the three things your
Read More
Read More
D-Size vs V-Size: A Complete Guide to Telescope Dovetail Systems
What's the difference between D-size and V-size telescope dovetails? Here's everything you need to know.
Read More
Read More
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
What Is Back Focus in Astrophotography? Telescope Reducers, Flatteners, and Spacing Explained
Back focus is one of those astrophotography terms that c
Read More
Read More