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LBN 331 in Cygnus



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: +4742'51"


All images and content remain the property of Jim Thommes - copyright 2003 - 2015 copyright 2003 - 2012

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