Calibration Problems on Schmidt Plates

  • R. Ziener
Conference paper

Abstract

The best way to calibrate Schmidt plates is by using similar objects to those under investigation as calibrators (for example: “small” galaxies with well-known magnitudes for “small” galaxies). This is a known postulate, often quoted by various authors, but it is difficult to put this rule into practice. Therefore astronomers often use artificial calibration; in most cases spot or wedge sensitometers.

Keywords

Refraction Photography 

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References

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Copyright information

© Springer-Verlag Berlin Heidelberg 1988

Authors and Affiliations

  • R. Ziener
    • 1
  1. 1.Karl-Schwarzschild-ObservatoryAcademy of Sciences of the G.D.R., Central Institute for AstrophysicsTautenburgGDR

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