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Eagle Nebula, M16, Sh2-49



Scope: Explore Scientific MN152 Maksutov Newtonian at f/4.8, Location: DAA Observatory, Shelter Valley, CA,  20 June, 17 July 2020,  Camera: ST8300M (Ha RGB filters) and Atik 383L (Astronomik Gen 2  OIII  Filter)

Exposure:  24 x 8 min (1x1 bin) Ha filter,   24 x 10 min (2x2 bin) OIII  filter,   10 x 4 min (1x1 bin) each RGB filters.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Sub-frame calibration and registration - PixInsight. Sub-frame integration (Average combine -  Winsorized Sigma Clipping) - PixInsight.  Non-linear stretching, normalization and gradient removal - PixInsight.  Generation of starless nebulosity images - starnet++.  Starless color mapping (modified HOO mapping) and RGB stars color - PixInsight. Stars and Starless combine - PixInsight. Final finishing  - Affinity Photo.  RGB calibration - PixInsight. Annotation - PixInsight, Aladin (Simbad), and Affinity Photo. This image is a  modified HOO narrow band mapping with RGB stars.  Images processed at 3352x2532 resolution. Final Image size is approximately  3200x2400.

North is up in this image.  This is an image of the emission region/nebula popularly known as the Eagle Nebula. The emission region is cataloged as Sh2-49, (also as  Gum 83, LBN 67). Imbedded within this emission structure is the open cluster cataloged as M16 (also as NGC 6611, OCL 54, MWSC 2886); the cluster is also associated with the emission nebula cataloged as IC 4703 (also as  OCISM 10). There are also numerous dark nebulae in this field - several notable ones from the Dobashi Catalog have been annotated.Sh2-296. Emission nebula LBN 68 is also embedded within the larger Eagle Nebula. In the lower left is the other open star cluster in this field Kronberger 2  (also known as MWSC 2898). The M16 star cluster is about 5,700 light years distant; the Kronberger2 cluster is about 10,425 light years distant.  These objects and some of the brighter stars are seen in the annotated image.  The Horizontal FOV is approximately 88'. Image scale of the full size image is 1.65 arcsec/pix. 

Image center is located approximately - Equatorial 2000: RA: 18h 18m 53s Dec: -1350'59" 


All images and content remain the property of Jim Thommes - copyright 2003 - 2021

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