M106 Region

Messier 106 (M106, also known as NGC 4258) is an intermediate spiral galaxy in the constellation Canes Venatici. It was discovered by Pierre Méchain in 1781. M106 is at a distance of about 22 to 25 million light-years away from Earth. M106 contains an active nucleus classified as a Type 2 Seyfert, and the presence of a central supermassive black hole has been demonstrated from radio-wavelength observations of the rotation of a disk of molecular gas orbiting within the inner light-year around the black hole. Besides the two visible arms, it has two "anomalous arms" detectable using an X-ray telescope.

The small edge on galaxy in the lower half of the image (NGC 4217), is a possible companion galaxy of Messier 106.

  https://astrob.in/srskiv/0/