- Exposure: RGB 3x20:3x20:3x20 minutes
- RGB Combine Ratios: 2.27:1.00:1.26
- Telescope: Stellarvue SV80S @ f/5.98
- Mount: Meade LX200 w/ super wedge
- Camera: SBIG ST-2000XM CCD, SBIG CFW-8
- Location: My backyard in Goleta, CA
- Date/Time: September 26/27, 2003, 21:11-01:34
PDT
- Processing: Taken and reduced in CCDSoft v5. Combined sub-exposures with Ray Gralak's Sigma Clip. Gradiants removed and color combined with custom software. Curves/levels/saturation adjusted in Photoshop.
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- Name:
- Open Cluster - M52, NGC7654
- Nebulosity - The Bubble Nebula, NGC7635
- Type: Open Cluster and Emission
Nebula
- Constellation: Cassiopeia
- About the Bubble Nebula (From APOD
on January 17, 2003):
The Bubble nebula lies at the center of a
larger complex
of shocked glowing gas about 11,000 light-years distant in the fair
constellation
Cassiopeia. NGC 7635 really is an interstellar bubble, blown by winds
from
the brightest star visible within the bubble's boundary. The bubble's
expansion
is constrained by the surrounding material. About 10 light-years in
diameter,
if the Bubble nebula were centered on the Sun, the Sun's nearest
stellar
neighbor, Alpha Centauri, would also be enclosed.
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