Sorry for the delay guys, I did not follow the thread and saw the request yesterday. As noted, the photos were taken with a tripod from the observation deck of the Contemporary. I used low ISO settings because I prefer to avoid noise in my pictures and the tripod with remote shutter release allowed me to use long shutter speeds.
The 200mm shot was taken at ISO 125, f8 for 3 seconds. I purposely used f stops less than the maximum to improve the sharpness of the photos.
The 70mm shot was taken at ISO 160, f14 for 5 seconds. I changed the aperture so I could capture the fireworks without blowing out the castle. Probably could have left the shutter open a little longer on this shot.