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Serpens Cloud Star Forming Region and LDN 583



Scope: FSQ-106N at f/5, Location: DAA Observatory, Shelter Valley, CA, 26 June and 4 July 2019,  Camera: Atik 383L (Astronomik Gen 2  LRGB Filters)

Exposure: Exposure: 19 x 13min  (1x1 bin) exposure with UV/IR block filter,  8 x 5 min (2x2 bin) each RGB exposures.

Processing: Data Collection -  Sequence Generator Pro (as FITs).  Exposure calibration, LRGB registration, and stacking (Median combine -  Winsorized Sigma Clipping) - PixInsight.  LRGB channel registration, equalization and gradient removal - PixInsight.  Curves, Levels, RGB combine, Luminance layering - PixInsight. Final finishing  - Photoshop.  RGB calibration - eXcalibrator. Annotation - PixInsight, Aladin (Simbad and NED), and PhotoShop. This image is a  RGB combine with Luminance layering.  Images processed at 3354 x 2529 resolution. Final Image size is approximately  2600x1950.

North is up in this image.  This image field shows the so called Serpens Cloud - the bulk of it is the dark region that extends top to bottom on the right of the image. LDN 583 is a dark nebula seen in the lower left portion of the image. The blue reflection nebulae seen at the top are  LBN 98 (uppermost) and vdB 123 (just below LBN 98). The Serpens Cloud is a star forming region. This is a heavily studied region; there are a large number of Young Stellar Objects (YSOs) and pre main sequence stars. The Serpens Cloud ranges in distance from 685 to 815 light years. These forming stars and young stars tend to be embedded in the dust core and many are not seen in the visible spectrum of this image. These 'invisible' stars are revealed in the Infrared (IR) spectrum. The annotated image shows the above image as well as a color mapped image of IR image data The two spectrum bands can be seen with a mouse-over action on the annotated image These objects  and some of the brighter stars are identified in the annotated image.  There is a slightly larger image scale (close-up) image of vdB 123 in Serpens here. of Horizontal FOV is approximately 120 arc minutes. Full size image scale is 2.77 arcsec/pix.

Image center is approximately - Equatorial 2000: RA: 18h 31m 02.5s Dec: +0055'30"


For IR image data in the annotated image: 

"This publication makes use of data products from the Wide-field Infrared Survey Explorer, which is a joint project of the University of California, Los Angeles, and the Jet Propulsion Laboratory/California Institute of Technology, funded by the National Aeronautics and Space Administration."


All images and content remain the property of Jim Thommes - copyright 2003 - 2019

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