M 42

Here is a first “test” picture of the Orion Nebula (M42). This is  - besides Moon - my first astrophoto. Taken in my Noordwijk garden on 22 March 2011 with the WO 110 FLT Triplet APO, field flattener, and the Canon EOS 450D in prime focus. Exposure was 5 minutes, no filter. Clearly, the alignment of the CGEM mount is not good at all, and I did not guide (no off-axis guider or auto-guider yet) as there are significant star trails. But, the diffuse gas nebula and even some hints of colours can be clearly seen. 

The Orion nebula M42 is a large emission nebula, largely hydrogen, and part of the Orion molecular cloud complex OMC-1, located below the Orion belt. M42 is a very bright gas nebula and is clearly visible to the naked eye. At a distance of only 414 pc (1350 light-years), M42 is an active star formation region.

Below: the great gas nebula M42 in Orion (3 Feb 2014). Three individual images were first subtracted by their equivalent dark images and added (using fitswork). Some enhancement was done with GIMP. Total exposure for each image = 181 seconds.

M42, 3. February 2014, Noordwijk, William Optics 110 mm APO LT f/7, Canon EOS 600D, UV-IR, UHC, 400 ISO, stack of three exposures (fitswork).