IC 5146 Region - Cygnus
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ON IMAGE FOR FULL SIZE VIEW (2400x1800) Scope:
FSQ-106N at f/5, Location: Laguna Mountains, CA 15 August 2015
Camera: Atik 383L (Astronomik Ha LRGB filters) Exposure:
Exposure: 12 x 8 min (1x1 bin) exposure with H-Alpha filter, 12 x 8 min
(1x1 bin) exposure with IR/UV Block filter, 8 x 4.5 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 2400 x 1800. North is up in this image.
The "Cocoon Nebula", IC 5146 (also known as LBN 424 and
Sharpless 125) is in the lower left in this image. Also involved in this
structure is a dark feature that Barnard listed in his catalog (B168).
Much of the rest of the field shows the dark nebulae and dust clouds West of the
Cocoon. These Dark regions are mostly noted in Lynds Dark Nebula Catalog. These objects
as well as some of the brighter stars are identified in the annotated
image. IC 5146 is about 3,300 light years distant from Earth. Horizontal FOV is 116' Image
center is approximately - Equatorial 2000: RA: 21h 53m
55s Dec: +47°14'12"
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