LBN 331 in Cygnus
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ON IMAGE FOR FULL SIZE VIEW (2800x2100) Scope:
FSQ-106N at f/5, Location: Laguna Mountains, CA 20 June 2015
Camera: ST8300M (Baader Ha LRGB filters) Exposure:
Exposure: 9 x 6 min (1x1 bin) exposure with IR/UV Block filter, 12 x 8 min
(2x2 bin) H-alpha exposures, 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.
This image is a RGB combine with Luminance layering. H-Alpha
exposure stack was screen blended into the wide spectrum IR/UV block stack for
the Luminance channel; the H-Alpha stack (nebula feature only) was lighten
blended into the Red stack for the Red channel. Color
saturation in LAB color; IR/UV Blocking filter exposure stack was used for the luminance
layer. Final Image size is approximately 2800 x 210o. North is up in this
image. This image is dominated by the emission nebula known as LBN 331.
The bright star central in the image is 32 Cygni. 32 Cygni is a binary star
system (32 Cygni A and B). The orbital plane of the two stars is nearly aligned
with the line of sight to Earth. This alignment from Earth's viewpoint becomes an
eclipsing variable star system known as V1488 Cyg. This emission nebula lies
(visually) in a dense star region of the Milky Way. This field is also well
represented in the DWB catalog - the brighter filaments of LBN 331 also have the
DWB designations of DWB 179, 178, 177, 172, 171 (from left to right). These
objects as well as some of the brighter stars are identified in the annotated
image. 32 Cygni is at a distance from Earth estimated between 1,100 to
1,174 light years. Horizontal FOV is 116' Image
center is approximately - Equatorial 2000: RA: 20h 15m
28s Dec: +47°42'51"
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