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Soap Bubble Nebula in Cygnus
PN G75.5+1.7
Image Information
Quoted from NOAO:
Informally known as the "Soap Bubble Nebula", this planetary nebula (officially known as PN G75.5+1.7) was discovered by amateur astronomer Dave Jurasevich on July 6th, 2008. It was noted and reported by Keith Quattrocchi and Mel Helm on July 17th, 2008. This image was obtained with the Kitt Peak Mayall 4-meter telescope on June 19th, 2009 in the H-alpha (orange) and [OIII] (blue) narrowband filters. In this image, north is to the left and east is down.
PN G75.5+1.7 is located in the constellation of Cygnus, not far from the Crescent Nebula (NGC 6888). It is embedded in a diffuse nebula which, in conjunction with its faintness, is the reason it was not discovered until recently. The spherical symmetry of the shell is remarkable, making it very similar to Abell 39.
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RGB with Ha used as Luminance
PN G75.5+1.7 HA_RGB
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RGB with Ha Layered in with Luminosity Blend
PN G75.5+1.7 HA+RGB
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PN G75.5+1.7 RGB
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Full Crop Ha
PN G75.5+1.7 HA+RGB Crop
This image consists of 34 Hydrogen Alfa 30 minute exposures for a total of 17 hours and an additional 15.25 hours of RGB data, with 4.75 hours red, 6 hours of green, and 4.5 hours of blue images all in 15 minute 2x2 binned images. The HA images are binned 1x1. All taken at
-15°C. All data was
acquired using MaxImDl/CCD version 5.24 using ACP8 and Scheduler8. Pix Insight version 1.8.02.1098 was used for processing. Dithered guiding was on. An additional 11 hours of OIII and 8.5 hours of SII has been taken but not used as of yet. This project was started back in early April and continued until late September with ACP Expert controlling the imaging taking the Narrowband data during optimum times and the RGB data when the Moon was down. ACP Expert has made this possible while I sleep and it tracks the best times to image these objects by my setting up the conditions such as minimum altitude, distance from the Moon, times before and after crossing the Meridian and so forth. This allows for a multitude of mixed imaging targets based on my priority settings giving me full automated control over the data gathering process.
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Equipment and Location Information
| Date |
April 6 - Sept. 23, 2015 |
| Location |
Dogwood Ridge Observatory |
| Optics |
Optical Guidance Systems 12.5" RC @f/9 |
| Mount |
Astro Physics AP1200GTO |
| Camera |
SBIG STL-11002M/CW8 |
| Filters |
Baader LRGB
Ha 7nm,SII 8nm, OIII 8.5nm - 50.8mm Unmounted Filters |
| Conditions |
Temperature low to mid 50s - 60s with
moderate to good seeing. Transparency good. |
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