Constellation Cassiopeia, NGC 7635. The "bubble" is created by the stellar wind from a massive, hot central star with a mass about 44 times that of the Sun.
Few times I imaged it with color camera and smaller scopes. Now, I put mono camera ASI2600MM Pro, EFW with Chroma 5nm SHO filters on Celestron Edge HD 9.25". 10min subs - 5hrs each filter exposure time. The image presented in the Hubble palette.
Software used: PixInsight, Astro Pixel Processor, Photoshop.

Few times I imaged it with color camera and smaller scopes. Now, I put mono camera ASI2600MM Pro, EFW with Chroma 5nm SHO filters on Celestron Edge HD 9.25". 10min subs - 5hrs each filter exposure time. The image presented in the Hubble palette.
Software used: PixInsight, Astro Pixel Processor, Photoshop.
