The ISOPHOT far-infrared serendipity sky survey

Manfred Stickel, Dietrich Lemke, Stefan Bogun, Ulrich Klaas, M. Kunkel, L. V. Tóth, Stephan Hotzel, Uwe Herbstmeier, Martin F. Kessler, Rene J. Laureijs, Martin J. Burgdorf, Charles A. Beichman, Michael Rowan-Robinson, A. Efstathiou, Gotthard Richter, M. Braun

Research output: Contribution to journalConference article

7 Citations (Scopus)


The ISOPHOT Serendipity Survey utilizes the slew time between ISO's pointed observations with strip scanning measurements of the sky in the far-IR at 170 micrometers. The slews contain information about two fundamentally different types of objects, namely unresolved galactic and extragalactic far-IR sources as well as extended regions of galactic cirrus emission. Since the structure of the obtained data is almost unique, the development of dedicated software to extract astrophysically interesting parameters for the crossed sources is mandatory. Data analysis is currently in its early stages and concentrates on the detection of point sources. First results from an investigation of a high galactic latitude field near the North Galactic Pole indicate that the detection completeness with respect to previously known IRAS sources will be almost 100 percent for sources with f(subscript 100micrometers > 2 Jy, dropping below approximately equals 50 percent for f(subscript 100micrometers < 1.5 Jy. Nevertheless, even faint sources down to a level of f(subscript 170micrometers approximately equals 1 Jy can be detected. Since the majority of the detected point sources are galaxies, the Serendipity Survey will result in a large database of approximately equals 2000 galaxies.

Original languageEnglish
Pages (from-to)115-125
Number of pages11
JournalProceedings of SPIE - The International Society for Optical Engineering
Publication statusPublished - Dec 1 1998


  • Far infrared surveys
  • Observatory operations

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Stickel, M., Lemke, D., Bogun, S., Klaas, U., Kunkel, M., Tóth, L. V., Hotzel, S., Herbstmeier, U., Kessler, M. F., Laureijs, R. J., Burgdorf, M. J., Beichman, C. A., Rowan-Robinson, M., Efstathiou, A., Richter, G., & Braun, M. (1998). The ISOPHOT far-infrared serendipity sky survey. Proceedings of SPIE - The International Society for Optical Engineering, 3349, 115-125.