Whirlpool Galaxy M51 with TAL200K

A real clearsky and no moon and for the first time I tried to calibrate the darkness. I used some reference stars in constellation Ursa Major and Bootes. Based on this I conclude that the maximum magnitude seen with the naked eye was about 5.25-5.5 Magnitude.

Under these circumstances I made two sessions of M51, Whirlpool Galaxy. One with ISO3200 (90s) and one with ISO6400 (60s). All pictures made with Nikon D7500 and TAL200K f/8.5. The mount was connected with Stellarium and camera controlled by DigiCamControl.
Raw pictures converted to DNG and stacked using DeepSkyStacker. Final editing with CS4.