Using the dehaze feature in Adobe Camera raw.
I hadn’t realised we had this feature in ACR, until someone mentioned it on FaceBook.
So I’ve been having a go at it for some of the shots the from the big auroral storm (coronal hole) of 7-8 October 2015.
This is the finished image.
First, the straight from the camera raw file, opened in Adobe camera raw for Editing
Then I went to the Fx tab and added in 100 dehaze
Next, I went back to the overview tab (leftmost) and dialled in some adjustments as shown here
And, after a few minor tweaks in Photoshop itself – the result