The Grus Quartet (NGC 7552, 7582, 7590, 7599)

© Velimir Popov & Emil Ivanov 2014
Size: 2000 px

The Grus-Quartet consists of four large spiral galaxies which are relatively close to each other. In that they should be interacting. The high starburst activity of two of the members, NGC 7552 and NGC 7582, is also thought to be a result from the tidal interactions. The distance to the galaxies is estimated to be between 55 and 70 Mly. Closer inspection of this image reveals that there are many deep yellow objects with fuzzy outlines. In fact these are distant galaxies hundreds of millions of light years away. Above NGC 7590 and NGC 7599 is situated the substantial galaxy cluster Abell 1111, dominated by two giant elliptical galaxies - PGC 71042 and PGC 71043. A widefield image, taken with 16" DCA can be found here.


Image details:


Center of field RA 24:18:01(h:m:s)
Center of field DE -42:23:17 (deg:m:s)
Size 51.6 x 42.9 (arcmin)
Pixel scale: 1.03 (arcsec/pixel)
Orientation: Up is 175 degrees E of N
Charts and image details obtained from
Optic(s): ASA 12" f 3,6 Astrograph (ASA)
Mount: ASA DDM85
Camera: FLI MicroLine 8300 CCD camera
Filters: Luminance, Red, Green, Blue, Astrodon filters
Dates/Times: 29, 30 August 2014
Location: Namibia-TIVOLI ASTROFARM, S 23° 27' 40,9" / E 18° 01' 02,2"
Exp. Details: L:8x10min,R:8x10min, G:8x10min, B:8x10min,, Bin1,
  Total Exposure Time - 320 min
More details: Dark and flat frames reduction,
Processing: PixInsight / PS
Copyright: Velimir Popov and Emil Ivanov 2014. All Rights Reserved
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