The “Rosette Nebula” is the largest nebula visible in the northern hemispheres of the world. A cluster of hot, blue/white “O” class stars have excavated the central part of this giant object

Takahashi CCA-250 telescope with an ST11000 camera and Astrodon filters. F/3.6 LRGB(30/7min BW, 7/5min2x2binRGB).