|
Hi Steve,
My understanding is that the L-pro is a broadband filter (great for galaxies and reflection nebulae) where as much of the visible spectrum passes through as possible except some wave lengths where the heaviest light pollution resides. On the other hand, the L-enhance & L-Extreme are dual band filters isolating hydrogen and oxygen only (great for emission nebulae). The tighter the bands, the less light pollution can creep in, but the more expensive the filter.
I’ve been using the L-Extreme for most emission nebulae (except M42), and use no filter at all for galaxies and reflection nebulae. When it comes to light pollution, there is no comparison. The L-Extreme really does the job. The only trouble with these dual band filters, is that it is harder to get natural colour stars. Some folk take two sets of images for the same target: narrow band for the nebula, then broadband for the stars and merge the nebula of the one image with the stars of the other. Others have excellent processing skills and manage to salvage their stars.
In summary, pros and cons with all filters. I can recommend the L-Extreme as I’ve used it extensively, never used the L-Enhance or L-pro, but I’m confident they’re great too.
|