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Zodiacal Light Data, ASCII


Availability: At NSSDC, Ready for Offline Distribution (or Staging if Digital)

Time span: 1974-12-11 to 1985-02-18


This data set (74-097A-11D) is an ASCII version, converted by NSSDC from the originally-submitted data set "Zodiacal Light Data Tape" (74-097A-11B). The originally-submitted data set 74-097A-11B is a further-processed version of the data set "Reduced Data" (74-097A-11A), and was corrected for star light and plasma-scattered light.

The original data were written in binary by a PDP/10, on multifile tapes, with each tape containing one month of data.

The first file in each month (tape) is a month (tape) header file; but it also includes in sequence all the measurement cycle header blocks. These blocks provide information about the status/health of the instruments, calibration, etc., for all the science data blocks in the month (tape). This file is followed by a series of files, each providing science data. The file structure is as follows: The first block is the measurement cycle header for that file. It is a repeat of the item contained in the month (tape) header file. The second block provides housekeeping information, mainly the average temperatures of the sensors. The third block provides the science data: Stokes parameters (Q) in ultraviolet, blue, and visible lights (U,B,V), polarization angles, Stokes parameters (U), polarized intensities, degrees of polarization, again in the U, B, V bands. In addition to these, the science block includes the above parameters for the actual Zodiacal light, after subtracting out the contaminants, star light and plasma-scattered light. The final, fourth block provides a number of coordinate values and velocity components of the spacecraft and some planets, angles such as earth-Helios-sun angle, aspect angles of some planets, etc.

Alternate Names


    • Space Physics: Zodiacal Light/Interplanet Dust
    • Planetary Science: Small Bodies
    • Astronomy: Visible


    • 74-097A-11D

    Additional Information



    Questions and comments about this data collection can be directed to: Dr. H. Kent Hills



    NameRoleOriginal AffiliationE-mail
    Dr. Christoph LeinertData ProviderMax-Planck-Institut fur

    Selected References

    • Richter, I., Description of the zodiacal light-data-tape of the Helios zodiacal light experiment E9, Max-Planck-Inst. fur Astronomie, Heidelbergkonigstuhl, Fed. Rep. of Germany, April 1981.
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