Statistics
Scientific paper
Dec 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...201.6302k&link_type=abstract
American Astronomical Society, 201st AAS Meeting, #63.02; Bulletin of the American Astronomical Society, Vol. 34, p.1214
Statistics
Scientific paper
Recent high-angular resolution ground- and space-based observations have produced unprecedented views of various astronomical objects at wavelengths ranging from Gamma Rays to Radio. These observations contain many complex components with different spatial scales and a wide range of contrast levels. Spatial characterization of these components is extremely important for understanding the physical characteristics of these sources. However, the multi-scale structures in these images cannot readily be studied directly, either because of the limited resolution and noise in the images, or because of the low contrast of the small-scale structures when compared to the large-scale features. Even the most spectacular high-angular resolution images are blurred by the telescope Point Spread Function (PSF), which often varies as a function of the off-axis angle and wavelength, and by instrumental effects including the limited detector pixel sizes. Image restoration including deconvolution techniques offers a powerful tool to improve the resolution in the images, and to extract information on the small-scale structure stored in the astronomical observations. I will review several deconvolution techniques including techniques that can be applied when the PSFs are well known. I will also address the accuracy of the restored images and the problem of assigning statistical significance and confidence levels to the results. To illustrate the current problem in accuracy estimation, I will show examples resulting from the application of several deconvolution techniques to a sample of astronomical images with different statistics. This work was supported in part by NASA contract NAS8-39073 (Chandra X-ray Center).
No associations
LandOfFree
Deconvolution Methods in Astronomy does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Deconvolution Methods in Astronomy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Deconvolution Methods in Astronomy will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1890419