The Pinwheel Galaxy (also known as Messier 101, M101 or NGC 5457) is a face-on spiral galaxy distanced 21 million light-years away in the constellation Ursa Major.
First discovered by Pierre Méchain on March 27, 1781, and communicated to Charles Messier who verified its position for inclusion in the Messier Catalogue as one of its final entries.(WIKI)

Imaged with Boren-Simon 10" F/2.8 POWERNEWT Astrograph.
SBIG ST8300M camera with FW5 filterwheel and BAADER LRGB filters.
EQ6 PRO mount with PHD guiding

Luminance = 90 minutes

RGB = 10 minutes each (BIN 2)
Total of 2 Hrs

Imaged from the NEGEV desert in ISRAEL