Bubble Nebula (NGC7635)
The Bubble Nebula is an emission nebulae in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a massive hot young central star. It was discovered in 1787 by William Herschel.
FSQ-106EDX F3.6 Exposure: SII 5x20 min., Ha 8x20 min., OIII 4x20 min. Binned 1x1
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