Mike Jolley
The Pinwheel Galaxy (M101)
> The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy 21 million light-years (6.4 megaparsecs) away from Earth in the constellation Ursa Major.
This is a stack of 60 images captured with a Nikon Z7ii, SkyWatcher Esprit 100 scope, and the HEQ5 Pro tracking mount. PHD2 software was used for guiding.
This image was made from 60x180s exposures at ISO 800, plus 20 darks and 40 flats stacked in AstroPixelProcessor and edited in Photoshop.
The Pinwheel Galaxy (M101)
> The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy 21 million light-years (6.4 megaparsecs) away from Earth in the constellation Ursa Major.
This is a stack of 60 images captured with a Nikon Z7ii, SkyWatcher Esprit 100 scope, and the HEQ5 Pro tracking mount. PHD2 software was used for guiding.
This image was made from 60x180s exposures at ISO 800, plus 20 darks and 40 flats stacked in AstroPixelProcessor and edited in Photoshop.