The year 2018 unfortunately began with an unprecedented astronomical drought. In the month of January there were 3 clear nights and February also began grey and rainy. Now finally a clear period of several nights was heralded, which I used for the IC 444 project I recently started and my first galaxy of the year with NGC 2403.
Here is the H-Alpha exposure of IC 444:
And this is the HaLRGB in raw condition:
The galaxy NGC 2403 as a raw version without any processing. Horrible reflections and gradients. I think the older flats did not fit anymore, I have to do new ones:
At the moment I used an artificial flat like this:
After Dynamic Background Extraction in Pixinsight and subtraction of the flat, the raw RGB looked very clean:
And here ist the galaxy NGC 2403 in final version ...
Video on Youtube: https://youtu.be/78g-kxOJN20
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