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The young and hot members in the center of IC1805 excite the surrounding clouds of hydrogen gas with their UV-radiation.
The bright patch in the upper right corner is another bright nebulosity - IC1795.
The picture is a composite of pictures capturing the emission lines of H-alpha and OIII, emitted by ionized hydrogen and oxygen.
Copyright by Gerhard Bachmayer 2003-2024
comment | |
melody | 26-Apr-2008 13:27 | |