M51

Processing from https://deepskyhosting.com/CAHEK-61 M51 Whirlpool Galaxy 05/14/2025 Nesvetay Telescope Sw 150/750 Mount Heq 5pro Camera Canon 6d mark ll Guide datyson t7c 42 frames of 150 seconds iso 800 Interframe shift every 3 frames Calibration frames: 20 flats 20 biases 6 darks (the rest are defective) The Whirlpool Galaxy (M51) is a spiral galaxy in the constellation Canes Venatici, located at a distance of about 27 million light-years from Earth. It was discovered on October 13, 1773 by Charles Messier. It got its nickname "Whirlpool" because of its beautifully twisted structure, resembling a whirlpool in water. The object's brightness is much higher than that of the Milky Way. The galaxy has a satellite - NGC 5195, both are clearly visible in an amateur telescope, and both can be distinguished as one point even with good binoculars.