About 160 mio.light-years away in the constellation of Phoenix this Galaxy-Group was first seen by John Frederick William Herschel in 1834.Also called "Robert´s Quartet",it consists of 8 interacting and merging galaxies,the brightest members of them are named NGC87,88,89, and 92.
Their apparent brightness of 13-14mg and their moderate size of 1 to 2 arc.minutes make them a difficult object for visual observers.NGC89 has a Seyfath 2 nucleus and emitts strogn H-alpha radiation.The most interacting galaxy of all is the unbarred spiral NGC92,which as a consequence is highly warped.
position (epoch2000) NGC 92 :
RA.: 0h 21m 23.1s
Decl.: −48° 37.75′ 39.5″
LRGB image with L = 30x1200s, RGB = 7x1200s each,a total of 17.0 hours
80cm f/7 AstroOptik Keller corrected cassegrain FLI Proline 16803 Astrodon LRGB GenII filters
Prompt 7 CTIO/UNC Chile,remote controlled
image processing: Bernd Flach-Wilken
here you see a 87%-FOV-look to Robert´s Quartet.To get full resolution,click here
this is a more detailed look to this Galaxiy-Group:
in this reversed and labeled version you can better detect the interactions between the members of Robert´s Quartet: