Some tests of the precision of CCD differential photometry measurements of bright double stars

Computer Science – Performance

Scientific paper

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Charge Coupled Devices, Double Stars, Optical Measuring Instruments, Stellar Luminosity, Stellar Spectrophotometry, Data Reduction, Equipment Specifications, Performance Tests, Stellar Oscillations

Scientific paper

Two bright double stars were observed during two nights with a CCD detector in order to verify the possible precision of the CCD differential photometry for asteroseismology applications. The results indicate that the precision of the measurements for each double star, 0.0013 and 0.0011 mag, is better than the precision obtainable with photomultipliers; the improvement, however, is very small.

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