DWB-118 "Propeller Nebula" Region - Cygnus
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ON IMAGE FOR FULL SIZE VIEW (2800x2062) Scope:
FSQ-106N at f/5, Location: Laguna Mountains, CA 15 July 2015
Camera: Atik 383L Exposure:
Exposure: 16 x 8 min (1x1 bin) exposure with H-Alpha filter, 10 x 5 min
(1x1 bin) exposure with IR/UV Block filter, 8 x 4 min (2x2 bin) RGB exposures. Processing: Data
Collection - Sequence Generator Pro (as FITs). Calibrated, stacked
(Kappa Sigma Combine) - Deep Sky Stacker. LRGB channel registration,
equalization, and central gradient removal - Astroart. Curves, Levels, RGB
combine - ImagesPlus. Luminance Layering, final stretch, and finishing -
Photoshop. RGB calibration - eXcalibrator. This image is a RGB combine
with Luminance layering. Color saturation in LAB color; H-Alpha exposure
stack was screen blended into the IR/UV Blocking filter exposure stack for the
luminance layer. Final Image size is approximately 2800 x 2062. North is to the
right in this image. This image is dominated by the central bright Nebula
known as DWB 118 (from the Dickel, Wendker, and Bieritz Catalog of the Cygnus-X
region). Distance and ienergizing source are not known. It is also in a region
with some obscuring dust intervening. The filed is well represented in the DWB
catalog - there are fourteen cataloged items present in this image field (DWB
90, 107, 108, 111, 117, 118, 119, 120, 125, 126, 131, 132, 133, 136). There are
a few dark nebulae cataloged that are in this image field as well. These objects
as well as some of the brighter stars are identified in the annotated
image. This image replaces and earlier image that can be seen
here. Horizontal FOV is 116' Image
center is approximately - Equatorial 2000: RA: 20h 16m
29s Dec: +43°38'31"
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