Celestial hemisphere:  Northern  ·  Constellation: Hercules (Her)  ·  Contains:  NGC 6632
NGC6632, Carlo Caligiuri
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NGC6632

NGC6632, Carlo Caligiuri
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NGC6632

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Description

The QHY8 camera sometimes surprise me... I was looking for some little and rarely imaged DSO for testing the camera and i found this nice spiral galaxy that was near the zenit and at a good distance from the Moon. I was discarding this image because i tried to do a lot of things to get out somethings good and always the result was ugly... But i realized that i need to pay more attention to the color calibration before export fits to tiff. Siril has a very nice photometric color calibration tool but sometimes the human eye of course is really better! 
So after a lot of attempts i finally get the colors that satisfy me a little bit.
I really now understand why a lot of people (me included) use DSLR in astrophotography... Images from dedicated cameras need more and more skills in processing to get somethings beauty. I will never get tired to repeat this!

I have solved (it seems...) the readout noise gradient... the tricks was using at least 100 bias frame (or more) and use a different driver for this camera! The "Microsoft and QHY" mystery. Instead of QHY8 Driver i use the QHY8 Pro driver. The only difference between two cameras is that the Pro has the temperature controller and QHY8 not. Another strange thing is that with the "QHY8 dedicated correct driver" the gain and offset control is not present...

Thanks to this camera and Microsoft Windows i can get a "reverse engineering" graduation!!!!

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