Cheers never done it before just checked and it was f11 10th second 1250 iso
looking at yours at 1/2 second showing no transition my movement must be my wobble
I did photoshop to get the building out of the blackness of the sky and the image is cropped down about as much as the nebula one
Here's the full low down from the EXIF data: R-L
Shot 1: F/9, 1/1400sec, ISO-800, -0.7 step.
Shot 2: F/8, 1/400sec, ISO-2000, -0.7 step.
Shot 3: F/8, 1/400sec, ISO-3200, 0 step.
Shot 4: F/8, 1/3200sec, ISO-3200.
Shot 5: Same as 4.
Shot 6: Same as 4.
Shot 7: F/8, 1/20sec ISO-5000.
Shot 8: F/8, 1/15sec, ISO-5000.
Shot 9: F/8, 1/4sec, ISO-5000.
Shot 10: F/8, 1/2sec, ISO-6400.
Shot 11: F/8, 1sec, ISO-6400.
All the shots had some kind of adjustment in Adobe Camera RAW for balancing in the combined image and then finer tweeking in Photoshop. These are just 11 of the 100+ images shot. Shooting was by the seat of the pants and checking in camera before making adjustments and re-shooting. Digital cameras make it a lot easier than the old days of film. You couldn't open up the back to check if your photo was going to come out.