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Skymap Visual Display on Film


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

Time span: 1977-08-22 to 1978-12-30


This data set consists of 95 4 x 5 in. black-and-white negatives that are pictorial displays of the X-ray sky survey data. Each film is a sky image of one of the following nominal X-ray energy channels: 13-25, 25-40, 40-80, 80-180, 13-40, and 13-80 keV. Each film is properly oriented for direct viewing, with the emulsion side down and the sticker with the film serial number on the upper right. The user should note that the coordinate system is oriented so that theta, the ecliptic longitude of the spacecraft spin axis, increases from the bottom to the top of each skymap. Therefore, for those skymaps that are not superpositions of data from different epochs, time also increases from the bottom to the top of the skymap. A comprehensive list of these sky survey photographs can be found in Figure 3 of A.M. Levine et al., Astrophys. J. Suppl., v. 54, pp. 581-617, 1984.

Alternate Names


    • Astronomy: Gamma Ray


    • 77-075A-04D

    Additional Information



    Questions and comments about this data collection can be directed to: Coordinated Request and User Support Office



    NameRoleOriginal AffiliationE-mail
    Dr. Alan M. LevineGeneral ContactMassachusetts Institute of
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