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LDN 673 in Aquila



Scope: Explore Scientific MN152  Maksutov Newtonian at f/4.8, Location: Laguna Mountains, CA   25 May 2014  Camera: Atik 383L

Exposure: Exposure: 16 x 8 min  (1x1 bin) exposure with UV/IR block,  8 x 4 min (2x2 bin) RGB exposures.

Processing: Data Collection -  Artemis Capture (as FITs).  Calibrated, stacked (Kappa Sigma Combine) Deep Sky Stacker, LRGB channel registration, equalization, and central gradient removal - Astroart.  Curves, Levels, LRGB combine and finishing  - Photoshop. This image is a  LRGB combine with Luminance layering.  Color saturation in LAB color;    Final Image size is approximately 2666 x 2000.

North is to the right in this image. This field is mostly covered buy the Dark Nebula structure of LDN 673. However, to the right of the image, are the smaller structures of LDN 676 and LDN 677. This field is in the constellation of Aquila. The annotated image identifies these nebulae as well as some of their sub parts. The bright stars are also identified. The brightest star in the lower right  is also known as 29 Aql.  Also in this field is a White Dwarf - a super dense stellar remnant cataloged GD 218. It is the striking, very small blue dot in the lower center - see the annotated image for identification.  Distances to Earth are 270 light years for  29 Aql; 684 light years for HD 181834; and 404 light years for the white dwarf GD 218.  Horizontal FOV is 88'

Image center is approximately - Equatorial 2000: RA: 19h 21m 02s Dec: +1116'29"


All images and content remain the property of Jim Thommes - copyright 2003 - 2014

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