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.