IMAGE CONSTRUCTION FROM THE IRAS SURVEY

被引：0

作者：

BONTEKOE, TR

KESTER, DJM

PRICE, SD

DEJONGE, ARW

WESSELIUS, PR

机构：

[1] KAPTEYN ASTRON LAB, POB 800, 9700 AV GRONINGEN, NETHERLANDS

[2] GEOPHYS LAB, BEDFORD, MA 01731 USA

[3] UNIV WYOMING, WYOMING INFRARED OBSERV, LARAMIE, WY 82071 USA

[4] LAB SPACE RES, 9700 AV GRONINGEN, NETHERLANDS

来源：

ASTRONOMY & ASTROPHYSICS | 1991年 / 248卷 / 01期

关键词：

IMAGE PROCESSING; INFRARED RADIATION; NUMERICAL METHODS; GALAXIES; INDIVIDUAL; M51;

D O I：

暂无

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

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.

引用

页码：328 / 336

页数：9