NGC7635, also known as the Bubble Nebula, is an emission nebula in the constellation Cassiopeia. The "bubble" is created by the stellar wind from a large hot young central star. The giant molecular cloud that contains the bubble is being excited by the hot star, causing it to glow red.
| Exposure |
• 5 hours (30 X 10 minutes) @ -10°C
• Dusk flats • Camera position angle: 320° |
| Processing |
• With PixInsight: ☞ Calibration and star registeraton ☞ Subframe integration ☞ Histogram transformation ☞ Background noise reduction • Noise reduction with Topaz DeNoise AI • Final tweaking in Photoshop CS6 |
| Date and Location |
• September 22, 2019 • Louisa County, Virginia, USA |
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Equipment |
• TMB-130SS APO refractor @ f/7 on an A-P 1200 mount • ZWO ASI-1600MC Pro color camera • Guided with an ST-402 camera on a 60mm f/5 scope • Imaging and autoguiding with MaxIm DL 6.20 • Automated image acquisition with ACP Observatory Control |
Updated May 23, 2023