LDN 673 in Aquila


12" ASA - LRGB

12" ASA - annotated image

    Size: 2000 px Size: 2000 px    
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© Velimir Popov & Emil Ivanov 2013
Lynds’ Dark Nebula 673 (or LDN 673) is a very dense and highly fractured dark cloud complex in the Aquila Rift (near to its center). It is located some 400 – 500 light-years from Earth. The Aquila Rift forms a huge mass of dark molecular clouds and consists of numerous small and large nebulae.Many of them have been identified and catalogued in 1962 by B.T. Lynds in his "Catalogue of dark nebulae". Situated against the Milky Way’s faint starlight, LDN 673 contains raw material to form a huge number of new stars. Visible indications of energetic outflows associated with young stars are the small redish nebulosity RNO 109 and Herbig-Haro object HH 32 (see annotated image). Widefield image, taken with 16" Dream Astrograph can be found here .

Image details:


Center of field RA 19:21:07 (h:m:s)
Center of field DE +11:15:39 (deg:m:s)
Size 1.57 x 1.12 (deg)
Pixel scale: 1.8 (arcsec/pixel)
Orientation: Up is -85.8 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Luminance, Red, Green, Blue, Astronomik filters
Dates/Times: August 2013
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: R:8x10 min, G:8x10 min, B:8x10 min Bin 2, Total 240 min (4:00 hrs)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013. All Rights Reserved
e-mail: info@irida-observatory.org
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