Publication

IMAGE CONSTRUCTION FROM THE IRAS SURVEY

BONTEKOE, TR., KESTER, DJM., PRICE, SD., DEJONGE, ARW. & WESSELIUS, PR., Aug-1991, In : Astronomy & astrophysics. 248, 1, p. 328-336 9 p.

Research output: Contribution to journalArticleAcademicpeer-review

IRAS survery data can be used successfully to produce images of extended objects. The major difficulties, viz. non-uniform sampling, different response functions for each detector, and varying signal-to-noise levels for each detector for each scan, have been resolved. The results of three different image construction techniques are compared: co-addition, constrained least-squares, and maximum entropy. The maximum entropy result is superior. We present an image of the galaxy M51 with an average spatial resolution of 45 arc seconds, using 60-mu-m survey data. This exceeds the telescope diffraction limit of about 1 minute of arc at this wavelength.

Original languageEnglish
Pages (from-to)328-336
Number of pages9
JournalAstronomy & astrophysics
Volume248
Issue number1
Publication statusPublished - Aug-1991

    Keywords

  • IMAGE PROCESSING, INFRARED RADIATION, NUMERICAL METHODS, GALAXIES, INDIVIDUAL, M51

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