NGC7635 The Bubble Nebula
I had been putting off processing this image because the conditions were not good on the night it was taken, and I was not convinced there would be enough data to work with, especially since there was no Oxygen or Sulphur data. I plan to revisit during the winter of 2024/2025 to gather more data. The Bubble Nebula (NGC7635) image comprises RGB and Hydrogen Alpha data.
Located in Cassiopeia, NGC7635 (Caldwell 11, Sharpless 162) is an emission nebula close to M52. The bubble is created by the wind emanating from the young central star SAO 20575. The surrounding gas is part of a giant molecular cloud that is also excited by this star.
Imaging session: 10/01/2024
Sky quality: Bortle 5 (approx.)
Mount: iOptron CEM40G
OTA Imaging: Skywatcher 120ED
Camera: ZWO ASI533MM Pro
Filter Wheel: ZWO
HaRGB Filters: ZWO
Focuser: Primaluce Lab ESATTO
Guiding: iOptron
Computer: Primaluce Lab Eagle 5 + ECCO2 (Environment)
Light Exposures:
Ha ……….. 12 x 300s
Red ........... 20 x 90s
Green ......... 20 x 90s
Blue .......... 20 x 90s
Calibration files:
BIAS .......... 100
Dark .......... 50
Flat .......... 20
Dark flat ..... 50
Total integration time: 2.5hrs
Processing
Using Pixinsght, the background was extracted using Seti Astro’s Automatic DBE before using Russel Crowman’s BlurXterminator and NoiseXterminator. Some further noise reduction using Topaz DeNoise and touching up with Adobe Photoshop.
Astrometric Information
Center (RA, Dec): 350.195, 61.201
Center (RA, hms): 23h 20m 46.707s
Center (Dec, dms): +61° 12' 05.268"
Size: 49 x 48.7 arcmin
Radius: 0.575 deg
Pixel scale: 1.96 arcsec/pixel
NGC7635 The Bubble Nebula
I had been putting off processing this image because the conditions were not good on the night it was taken, and I was not convinced there would be enough data to work with, especially since there was no Oxygen or Sulphur data. I plan to revisit during the winter of 2024/2025 to gather more data. The Bubble Nebula (NGC7635) image comprises RGB and Hydrogen Alpha data.
Located in Cassiopeia, NGC7635 (Caldwell 11, Sharpless 162) is an emission nebula close to M52. The bubble is created by the wind emanating from the young central star SAO 20575. The surrounding gas is part of a giant molecular cloud that is also excited by this star.
Imaging session: 10/01/2024
Sky quality: Bortle 5 (approx.)
Mount: iOptron CEM40G
OTA Imaging: Skywatcher 120ED
Camera: ZWO ASI533MM Pro
Filter Wheel: ZWO
HaRGB Filters: ZWO
Focuser: Primaluce Lab ESATTO
Guiding: iOptron
Computer: Primaluce Lab Eagle 5 + ECCO2 (Environment)
Light Exposures:
Ha ……….. 12 x 300s
Red ........... 20 x 90s
Green ......... 20 x 90s
Blue .......... 20 x 90s
Calibration files:
BIAS .......... 100
Dark .......... 50
Flat .......... 20
Dark flat ..... 50
Total integration time: 2.5hrs
Processing
Using Pixinsght, the background was extracted using Seti Astro’s Automatic DBE before using Russel Crowman’s BlurXterminator and NoiseXterminator. Some further noise reduction using Topaz DeNoise and touching up with Adobe Photoshop.
Astrometric Information
Center (RA, Dec): 350.195, 61.201
Center (RA, hms): 23h 20m 46.707s
Center (Dec, dms): +61° 12' 05.268"
Size: 49 x 48.7 arcmin
Radius: 0.575 deg
Pixel scale: 1.96 arcsec/pixel