Sh 2-16, Sh 2-17, Sh 2 - 18, Sh 2-19 and Sh 2-20 in Sagitarius

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  16" DCA: HaLRGB 16" DCA: annotated map 16" DCA: LRGB 16" DCA: Ha  
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© Velimir Popov & Emil Ivanov 2016
 

Sh 2-16 (RCW 137, Gum 70), Sh 2-17 (RCW 138), Sh 2-18 (RCW 139), Sh 2-19 (RCW 140) and Sh 2-20 (RCW 141) are part of the Sh 2-15 to Sh 2-20 complex of HII regions located in the Sgr OB5 association in the Sagittarius arm. More detailed information about this objects can be found on GalaxyMap page .

Image details

Annotation

 

Center of field RA 17:46:50 (h:m:s)
Center of field DE -29:21:41 (deg:m:s)
Size 1.27 x 1.27 (deg)
Pixel scale: 1.23 (arcsec/pixel)
Orientation: Up is 179 degrees E of N
Charts and image details obtained from Astrometry.net
Optic(s): 16" f3,75 Dream Corrected Astrograph (DCA)
Mount: Astelco NTM-500 direct drive mount
Camera: Apogee Alta U-16M CCD camera
Filters: Lum, Red, Green, Blue, Ha, OIII and SII Astrodon
Dates/Times: 31 Aug. 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: Ha: 8x15min, L: 7x10min, R: 7x10min, G: 7x10min, B: 7x10min, Bin 1
  Total Exposure Time - 400 min (6:40 hours)
More details: Dark and flat frames reduction
Processing: PixInsight / PS
 
Copyright: Velimir Popov and Emil Ivanov 2016. All Rights Reserved
 
e-mail: info@irida-observatory.org
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