Barnard 83 84 and 280 in Sagittarius
Scope: FSQ-106N 106 mm refractor at f/5, Location: Laguna Mountains, CA 31 May 2013 Camera: ST8300M
Exposure: 16 x 6 min (1x1 bin) exposure with UV/IR block, 10 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 LRGB combine with Luminance layering - Final Image size is approximately 3200x2417
North is up in this image. This image field is in a congested region of the Milky Way within 7 degrees of the galactic center. Predominant in this field are the dark regions Barnard 83 and 84. These are the two darkest regions central in the image. Barnard 280 is the larger dusky region in the lower right in this image. Also seen in this field are the planetary Nebula NGC 6445 (AKA "The Little GEM") and the globular cluster NGC 6440. Both of these objects are seen toward the left in this image. The higher resolution images show these objects in greater detail. NGC 6440 is about 27,700 light years distant from Earth; NGC6445 is about 4,400 light years distant from Earth. Horizontal FOV is about 116'
Image center is approximately - Equatorial 2000: RA: 17h 46m 45s Dec: -20°08'39"
All images and content remain the property of Jim Thommes - copyright 2003 - 2013
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