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C5 Solar Filter
1000 Oakes Solar Filter that has seen be through a few eclipses and transits. This filter fitted my 5" Celestron SCT.
From memory, the filter is about 15 years old, which is about the expected life of these filters. However, the coating still looks good and when I hold it up to the Sun, I can not see any pinpoints of light shinning through.
The rather-old looking box for the filter is marked $207, so I guess that is what I paid for, before postage.
Posted $60
Last edited by Tropo-Bob; 23-08-2018 at 12:01 PM.
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