Click on image for full size version.
- 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
- 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.
- Open Cluster - M52, NGC7654
- Nebulosity - The Bubble Nebula, NGC7635
- Type: Open Cluster and Emission
- Constellation: Cassiopeia
- About the Bubble Nebula (From APOD
on January 17, 2003):
The Bubble nebula lies at the center of a
of shocked glowing gas about 11,000 light-years distant in the fair
Cassiopeia. NGC 7635 really is an interstellar bubble, blown by winds
the brightest star visible within the bubble's boundary. The bubble's
is constrained by the surrounding material. About 10 light-years in
if the Bubble nebula were centered on the Sun, the Sun's nearest
neighbor, Alpha Centauri, would also be enclosed.