Bubble Nebula (NGC 7635)
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The Bubble Nebula (NGC 7635) is an emission nebula located in the constellation Cassiopeia, thousands of light-years from Earth. It is a striking cosmic structure formed by the interaction between a massive star and the surrounding interstellar material. The nebula’s distinctive bubble-like shape is the result of intense stellar winds pushing outward, creating a glowing shell of ionized gas that stands out against the darker regions of space.
Surrounding the nebula are vast clouds of gas and dust, shaped and compressed by the expanding bubble. These regions are rich in molecular material and can give rise to new star formation as they are disturbed by the energy from the central star. The nebula’s glow comes from the ionization of hydrogen, which emits light in visible and infrared wavelengths, making it a popular target for both professional and amateur astronomers.
The Bubble Nebula is a dynamic and evolving structure, constantly changing as the stellar winds continue to shape its form. Over time, the massive star at its center will undergo further evolutionary changes, eventually leading to a supernova explosion. This event will disperse the nebula’s material into space, contributing to the cosmic cycle of star formation and destruction that shapes galaxies.
| Object | Bubble Nebula (NGC 7635) |
| Link | https://www.shetzers.com/bubble-nebula-ngc-7635/ |
| Wiki Link | https://en.wikipedia.org/wiki/Bubble_Nebula |
| Hemisphere | Northern |
| Constellation | Cassiopeia |
| Other Names contained in image | Sh2-162, Caldwell 11, NGC 7635 |
| Imaging telescopes or lenses | Takahashi TOA-130NFB |
| Imaging cameras | QHY268M |
| Mounts | Astro Physics 1600 |
| Focal reducers | None |
| Software | N.I.N.A., AP Drivers, PHD Lab PHD2, Viking, PixInsight, Photoshop, Lightroom |
| Filters | Astrodon LRGB Gen2 E-Series Tru-Balance 36mm unmounted. Chroma Technology Narrowband 3nm Ha, SII, OIII – 36mm Unmounted |
| Accessories | Moonlite NightCrawler 35 focuser, Maxdome II, Digital Loggers Pro Switch, Sky Alert Weather Station, Pegagsus Ultimate Powerbox v2, QHY 7-slot filter wheel. |
| Guiding Telescope or Lenses | Orion 60mm Guide Scope |
| Guiding Camera | ZWO ASI290MM Mini |
| Imaging Dates | 8/27/24, 8/28/24, 8/29/24, 8/30/24, 8/31/24, 9/6/24, 9/7/24, 9/13/24, 9/14/24, 9/20/24, 9/21/24, 11/20/24 |
| Frames | Ha:82×600″ (13.7h) Gain 56, High Gain Mode, Temp -10C, Bin 1×1 OII:63×600″ (10.5h) Gain 56, High Gain Mode, Temp -10C, Bin 1×1 SIII: 64×600″ (10.7h) Gain 56, High Gain Mode, Temp -10C, Bin 1×1 Red: 9×180″ (0.5h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 Red: 10×45″ (0.1h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 Green: 8×180″ (0.4h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 Green: 10×45″ (0.1h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 Blue :8×180″ (0.4h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 Blue :10×45″ (0.1h) Gain 26, High Gain Mode, Temp -10C, Bin 1×1 |
| Integration | 36.5h |
| Darks | 50 |
| Flats | 20 per Filter |
| Flat Darks | 40 |
| Bortle Dark-Sky Scale: | 2 |
| RA center | 350.20192 |
| DEC center | 61.14019 |
| Pixel scale | 3.76 |
| Resolution | 6280 x 4210 |
| Locations | Sirus 3.5m Observatory, Carbondale Colorado |
| Data source | Backyard |
| Seeing | Average |
| Post Processing Techniques | PixInsight to Photoshop to Lightroom |
| Type | SHO with RGB Stars |