IMAGE CONSTRUCTION FROM THE IRAS SURVEYBONTEKOE, 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 journal › Article › Academic › peer-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.
|Number of pages||9|
|Journal||Astronomy & astrophysics|
|Publication status||Published - Aug-1991|
- IMAGE PROCESSING, INFRARED RADIATION, NUMERICAL METHODS, GALAXIES, INDIVIDUAL, M51