ScienceDownEast | ScienceDownEast Astrophotography | Nebulae | NGC 7635 Bubble Nebula | NGC 7635 (Bubble Nebula)
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The Bubble Nebula, also known as NGC 7635, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575 (BD+60°2522). The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in November 1787 by William Herschel. The star BD+60°2522 is thought to have a mass of about 44 Mâ.
[Source: Wikipedia, en.wikipedia.org/wiki/Bubble_Nebula]
Total image time was 1 hour and 10 minutes.
The Bubble Nebula, also known as NGC 7635, Sharpless 162, or Caldwell 11, is an H II region emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7 magnitude young central star, SAO 20575 (BD+60°2522). The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow. It was discovered in November 1787 by William Herschel. The star BD+60°2522 is thought to have a mass of about 44 Mâ.
[Source: Wikipedia, en.wikipedia.org/wiki/Bubble_Nebula]
Total image time was 1 hour and 10 minutes.
| Moon Phase | Last Quarter | ||||||||||||
| Camera | ToupTek ATR2600C | ||||||||||||
| Optics | Skywatcher Esprit 120ED, 840 mm focal length, f/7 (120 mm aperture, APO triplet) | ||||||||||||
| Filter | Triad Quad | ||||||||||||
| Binning | 1.x1. | ||||||||||||
| Stacking | StackingWizard, 7 frames | ||||||||||||
| Date | 2025-09-14 | ||||||||||||
| AstroWizard Processing |
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