A single 120s frame 1600 ISO with the Nikon D750 & the SharpStar 76EDPH, a cropped frame from the original.
The consistent clear skies are a real break after so many winter months of clouds and rain. This is the finalized M51 image, two nights of images for 10hrs and 10 minutes RGB Ha with the Esprit 120mm F5,5 and the ASI183mm.
A preliminary result, as I will try & add more data the coming clear nights
M51 in Ursa Maior, about 4,5 hours of imaging, 300-second exposures with the ASI183MM, SX Filterwheel, Baader RGB Ha, SGP with Solve & Sync, Meridian Flip, and the Esprit 120mm F 5,5