I dont see a tripod movement at second picture. If it was the reason , street lights would not look sharp.
Which lens do you use ?
As Jnanian said , some lenses do strange things at the dim light. May be during long expose , sky recorded as white and you call this dreamy . If you are lucky and if your lens do such things , I advise to use color film. You will amaze with the colors.

Umut