Box of Galaxies

From top left, going clockwise, NGC 4173. NGC 4169, NGC 4174 and NGC 4175.
From top left, going clockwise, NGC 4173. NGC 4169, NGC 4174 and NGC 4175.

This is pretty low resolution, a 1220 x 907 crop from the middle of an 18 megapixel frame.  It is also lacking in detail because I could only use the best 7 of 12 images at 300 seconds each At ISO 1600 on the f/7.5, 127 mm diameter apochromatic refractor.  Shot without an LP filter.

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