Документ взят из кэша поисковой машины. Адрес оригинального документа : http://www.stsci.edu/~levay/color/colorcomp.pdf Дата изменения: Wed Oct 27 23:49:00 2004 Дата индексирования: Tue Oct 2 07:41:58 2012 Кодировка: Поисковые слова: cygnus

Combining separate exposures to produce a color image

Separate filter images

Grayscale

[HeII] F469N

[OIII] F502N

H F656N

[NII] F658N

Colorized

Resulting color composite
Separate images are exposed through different color filters. The resulting black and white or "grayscale" images are assigned a color that can be viewed or reproduced (that may or may not be the color of the filter used for the exposure). The separate images are combined in color image "channels" that together produce a full range of hues. Using filters that match the eye's response can result in a natural or "true" color image. Otherwise, the colors are enhanced or shifted from what we would be able to see.