NGC 6755, NGC 6756 - open clusters in Aquila

          © Velimir Popov & Emil Ivanov 2021
  Size: 2000 px      

This image shows a 1.96 x 1.31 deg star field in constellation Aquila. Against a rich background of the Milky Way is situated the large and scattered open cluster NGC 6755. The smaller cluster to the left is NGC 6756. Both clusters have been studied in our “Research for Ha emission candidates in Open Star Clusters”. Found candidates are shown on the image below (red circles).

Image details:


Center of field RA 19:07:50 (h:m:s)
Center of field DE +04:16:30 (deg:m:s)
Size 1.96 x 1.31 (deg)
Pixel scale: 1.77 (arcsec/pixel)
Orientation: Up is 69.4 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" Astrograph @ f/3.6 (Newton)
Mount: ASA DDM85 Standard
Camera: SBIG STL 11000 M
Filters: Red, Green, Blue, Astronomik filters
Dates/Times: 15. Sep. 2017
Location: IRIDA Observatory, BG, longitude: E 24 44' 18", latitude: N 41 41' 42"
Exp. Details: R:5x3 min, G:5x3 min, B:5x3 min, Bin 1, Total Exposure Time - 45 min.
More details: Dark and flat frames reduction
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2013 - 2021. All Rights Reserved
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