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Compilation Catalog Program

7.1 Convert  magnitudes.

   Catalogs may report magnitudes of different types, which values should be calibrated if used in calculations together. CompiCat allows the user to make linear conversions of  the four magnitudes  reported in a given catalog. To open the window for magnitude conversion (Convert magnitudes) click button  .


  Each of the boxes with magnitudes, e.g.,  , allows to chose one of the four magnitudes (m1, m2, m3, m4) reported in the catalog to be used in recalculation.
   Output magnitude identifies the magnitude field where the result of the magnitude conversion described in the block Common magnitude. All the four magnitudes reported in the catalog in process could participate in the unique determination of the four magnitudes in the output catalog.

    The Magnitude function box in Common magnitude allows the four choices - value, maximum, minimum, average - that determine the unique conversion:

  • value - The output value is determined by the priority order of recalculated magnitudes that are checked in below. The higher rows are of higher priorities.
  • maximum - The output value is the maximum of recalculated magnitudes that are checked in below.
  • minimum - The output value is the minimum of recalculated magnitudes that are checked in below.
  • average - The output value is the average of recalculated magnitudes that are checked in below.

The user can introduce up to four recalculated magnitudes to be used to derive the converted, presumably, calibrated value by clicking with the left-mouse button the appropriate check-boxes on the left. To avoid using the magnitude function f(m) in the absence of input magnitude determination you can adjust the values in the leftmost and rightmost edit boxes to a desired magnitude cutoff and output constant, respectively. In the presence of input magnitude determination (i.e., when input magnitude equals to or is above magnitude cutoff) the recalculated value equals to the linear function,  which coefficients should be typed in the two appropriate edit boxes.

By clicking the Default button the user sets the default values of the Tool. By clicking the Reset button the user can remove all the changes introduced after entering the Tool window. (Note that Reset button during the first usage of the Tool is equivalent to the default values.)

Compilation Catalog Program

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