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High-contrast Filters
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Daniel Johnson on November 10, 2002 05:16:37 UTC |
Since Lumicon has now gone out of business, you would have to find their filters second-hand. I have both their broadband and high-contrast varieties, as well as their Oxygen-III variety. I was disappointed with the broadband filter but quite pleased with both the high-contrast and Oxygen-III filters. If you want to be able to see, say, the Orion nebula from within a small city's light, get a high-contrast filter (Orion's should do the job). The Oxygen-III gives a slight gain over the high-contrast for a few objects, such as the Veil nebula, but I find it most useful when I'm at a dark-sky site. None of these filters makes the Veil visible from my home town (city of about 200,000 people) but the high-contrast makes a huge difference for several nebulous objects in town, and both the high-contrast and O-III filters are good for dark sky sites.
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