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nobody

05 Apr 2016 21:18



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Trebuie sa ai grija la temperatura (chiar si cand nu-l folosesti):

Attention at low temperatures:
A Fabry-Perot filter may never freeze. Being made for working at a very specific temperature, a complex filter should not be exposed to temperatures below 5 C (40 F). The immersion oil which connects the optical elements can solidify. Then, it presses them apart and the coatings of the to 1/200 lambda plane-parallel polished etalon plate suffer damage. Also, the adhesion of the dielectric coating is extremely stressed, resulting in an accelerated intercalation of water into this layer. This is regarded as mistreatment and forced ageing of the filter, voiding warranty.
40-100 F
http://www.sunfield.ne.jp/~oshima/data/DaystarQuark/QuarkManual.pdf