NGC 6888 in Cygnus
CLICK ON IMAGE FOR LARGE VIEW (2000x1500)
Scope: Celestron 9.25 Edge 235 mm at f/7, Location: Laguna Mountains, CA 29 June 2013 Camera: ST8300M
Exposure: 10 x 9 min (1x1 bin) exposure with UV/IR block, 16 x 8 min (2x2 bin) Hydrogen Alpha exposure, 8 x 3 min (2x2 bin) RGB exposures.
Processing: Data Collection - CCDSoft (as FITs). Calibrated, stacked (Sigma Combine), LRGB channel registration, central gradient removal, and color equalization - Astroart. Curves, Levels, LRGB combine and finishing - Photoshop. Color calibration using eXcalibrator. This image is a HaL-RGB combine with Luminance layering - Final Image size is approximately 2000x1500.
North is up in this image. NGC 6888 is also popularly known as the crescent Nebula. It is an interesting structure since it was formed by a massive Wolf-Rayet star. The Wolf-Rayet is the bright star in the center of the object - it is theorized that it will ultimately go supernova. This field is located in the constellation of Cygnus. NGC 6888 is located about 4,700 light years distant from Earth. This image replaces an earlier image that can be seen in the Archives here . The Horizontal FOV is 38'.
Image center is located approximately - Equatorial 2000: RA: 20h 12m 06s Dec: +38°21'18"
All images and content remain the property of Jim Thommes - copyright 2003 - 2013
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