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Lynd's Dark Nebulae and NGC 6451 in Sagittarius and Scorpius

 

 

CLICK HERE FOR HIGH RESOLUTION - (2400x1600)

Optics: Zenithstar 66 mm APO at f/4.5; Location: Laguna Mountains, CA;  4 July 2010; Camera: Canon XT 350D (Baader ACF modified)

Exposure: 18 x 6 min  (unfiltered)   ISO 800 , 5 Darks, no Flats 

Processing: Images were captured with DSLR Focus  and saved as RAW file format. Exposures were decoded and dark corrected in IRIS. Exposures were aligned and stacked in IRIS with Sigma Median.  Dark point equalization and rough color balance  were done in IRIS.  Gamma and saturation adjustments were also done in IRIS.  Stretch and crop adjustments were done in Photoshop - Background was set high to show field star density.     Final stretching and touch up was done in PhotoShop.     Final Image size is approximately 3474x2314 - re-sampled and cropped to 2400x1600.

North is up in this image.  This image is guided.  This region is in s dense area of our Milky Way galaxy near the galaxy center. There are several dark nebulae in the image and a star cluster NGC 6451  near the right edge. The dark nebulae are catalogued in the Lynd's Dark Nebula list. Across the upper right (from left to right) are LBN 48, 40, and 35. Below those and to the left is a filamentary LBN 49. The central dark structure is LBN 10, 1795, and 1788. Finally in the lower left are LBN 1783 and LBN 1766.  There is a small dark nebula - B294 in the upper left  The Horizontal FOV is about 70 arc minutes.

Image Center is approximately - Equatorial 2000: RA: 17h 55m 44s Dec: -3034'18"

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