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The image
processing of narrow band recordings differs fundamentally from the classical
processing of RGB or LRGB recordings. This is due to the fact that specific
emission lines are "captured" in narrow-band images, which have to be separated
from the eye in their later visual representation. However, this is not always
easy, since for example the emission line of sulphur-II is very close to that
of hydrogen-alpha and nitrogen-II. These lines are all red for the human eye.
The emission lines of hydrogen-beta and oxygen-III, however, are both located
in blue (or turquoise) for the human eye. In order to enable the viewer to
separate the information in the processed image, one tries to assign the
emission lines to a "false color" corresponding to the general color theory
(keyword: complementary colors). |
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Narrow band images of NGC 3603 and 3576, IC 2944/48 and NGC
6188 and 6193 |
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With these
three images we welcome Bernd Gooßmann as 4th member of the Team
Chamäleon. He writes to the images ...
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higher resolution (1800 x 1350 Pixel) (2400 x 1800 Pixel) Image data - Exposure: 18x180s H-alpha, je 16x180s SII,OIII, Filter: Astrodon 3nm, Camara: ASI 1600-MMpro, Telescope: 6" Zeiss APQ - f/8 An object description about NGC 3603 und NGC 3576 can be found here ... |
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higher resolution (1800 x 1350 Pixel) (2400 x 1800 Pixel) Image data - Exposure: 17x220s H-alpha, je 14x220s SII,OIII, Filter: Astrodon 3nm, Camara: ASI 1600-MMpro, Telescope:: 105mm Pentax - f/6 An object description about IC 2944 und IC 2948 can be found here ... |
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higher resolution (1400 x 1900 Pixel) Image data - Exposure: 18x220s H-alpha, je 14x220s SII,OIII, Filter: Astrodon 3nm, Camara: ASI 1600-MMpro, Telescope:: 105mm Pentax - f/6 An object description about NGC 6193 und NGC 6188 can be found here ... |
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All Images and all Content are © by Franz Hofmann, Wolfgang Paech, Dirk Lucius und Bernd Gooßmann |