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Open AccessArticle10.1515/astro-2000-0305

The amplitude differences between CCD and PMT measurements

A. Kanaan,D. O’Donoghue,S. J. Kleinman,J. Krzesiński,D. Koester,S. Dreizler-2000-01-01-Open Astronomy
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TL;DRAbstract

Using model atmospheres, quantum efficiency and transmission curves, we compute expected values for amplitudes of DAV, DBV and DOV stellar models as measured through different detectors and/or filter combinations. We conclude that choosing the wrong detector may lead to amplitudes lower by 20 % than those measured by phototubes. The correct choice of CCD + filter may reduce this problem down to a difference of 6 %.

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Using model atmospheres, quantum efficiency and transmission curves, we compute expected values for amplitudes of DAV, DBV and DOV stellar models as measured through different detectors and/or filter combinations. We conclude that choosing the wrong detector may lead to amplitudes lower by 20 % than those measured by phototubes. The correct choice of CCD + filter may reduce this problem down to a difference of 6 %.

Keywords

PhysicsAmplitudeOpticsAstronomy

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