Поиск по: -
Поискать по всем серверам
На этой странице приведены все страницы, которые ссылаются на http://www.stsci.edu/instrument-news/isr/wfpc2/9504/9504_1.html. Показаны документы 1 - 2 из 2.
1. http://www.stsci.edu/documents/dhb/web/c32_wfpc2dataanal.fm2.html
... A number of corrections must be made to WFPC2 data to obtain the best possible photometry. Some of these, such as the corrections for UV throughput variability, are time dependent , and others, such as the correction for the geometric distortion of WFPC2 optics, are position dependent . ... The most important time-dependent correction is that for the contamination of the CCD windows, which affects primarily UV observations. ... Assuming a 2 pixel aperture, the corrected counts are given by: . ...
[
Сохраненная копия
]
Ссылки http://www.stsci.edu/documents/dhb/web/c32_wfpc2dataanal.fm2.html -- 40.2 Кб -- 24.02.2000
Похожие документы
Похожие документы
2. A Scheme for Compressing Floating-Point Images
Next: Adaptive, Lossless Compression of 2-D Astronomical Images . ... While many techniques have been used to compress integer data, compressing floating-point data presents a number of additional problems. We have implemented a scheme for compressing floating-point images that is fast, robust, and automatic, that allows random access to pixels without decompressing the whole image, and that generally has a scientifically negligible effect on the noise present in the image. ...
[
Сохраненная копия
]
Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/ -- 16.4 Кб -- 16.07.1999
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/whiterl.html -- 16.4 Кб -- 16.07.1999
Похожие документы
[ Сохраненная копия ] Ссылки http://www.adass.org/adass/proceedings/adass98/whiterl/whiterl.html -- 16.4 Кб -- 16.07.1999
Похожие документы