Van Den Broek
This image was taken in the summer of 2016.
it takes me 8 nights to collect the data for this weak
nebula nearby ngc6888
its a combination of H-alpha and O3.
Totally exposure time of +- 23 ours 80X600 sec h-alpha
and 60X600 sec O3
The picture is taken with my atik314L on a 200mm F5