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The Bubble Nebula, NGC7635 in Cassiopeia, is an emmission nebula with the "bubble" formed by the stellar wind of a massive central star. This image was made using the LX200R 14" telescope with the Starlight Xpress SXV H16 CCD camera. The exposures totalled 28 minutes for the Luminance and 4 minutes each for the R, G and B. [Jefferis]