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Haze
Forum List | Follow Ups | Post Message | Back to Thread Topics | In Response To Posted by Rick Crockett on April 20, 2007 05:23:45 UTC |
Could be either from oily deposit right out from the air, which alcohol or dish soap should be able to remove. It could be from the breakdown and oxidization of the coating. If you hold the mirror up to a bright light, do you see lots of holes, scratches and the bright object? If so then yes it probably should be recoated. Hazy appearances may be due to scattering from dielectric coatings but probably not in relatively inexpensive scopes. The hope is the gain in relectivity and transmission offsets the loss of contrast due to scattering. Dielectic coatings really grab oil films and hold on to them. They are hard to clean and a dry tissue will just push the oil around. Still they are expensive and not used on very many small relfectors.
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