by Paulo Lobao
Maybe the popular DSO of all. Easily visible at naked eye this diffuse nebula is situated south of Orion's Belt. This nebula contains a open cluster known as the Trapezium located at the "center´s" core. The asterism of its primary four stars are easily resolved in this picture. The Running Man Nebula is visible too in this photo at the "left" of M42.
I acquired the data for this at Muxagata, Portugal (MPC J15) for a total of 109 minutes with a DSLR. Final processing as a HDR photo.
Photo data:
Telescope: Takahashi FS102NSV @ f/6.2
Mount: ATLAS EQmod
Camera: Canon 40D modified
Guiding: Takahashi FS60C + QHY5
No filters
Total exposure time: about 109 min at ISO800 (9x15s, 9x30s, 9x60s, 9x120s, 9x240s, 5x480s)