I have a sample image here, I'm not sure how it will load it's a crop from a full frame.
I've read into your camera specifications and have found that 15 seconds is the longest shutter speed you can use, I didn't find a "Bulb" for shutter speed and this will limit your abilities to make clear "clarity" night photographs to work within the 15 seconds you will need to increase the ISO, increasing the ISO will introduce a grain effect and the clarity will fall off.
I'll give you a starting point some things you won't like what I'm saying but I've been doing this since 1983. You will need a sturdy tripod. Shut the IS off. See if you can focus on your subject and compose. If you can't auto focus (lack of light or contrast) switch to manual focus, focus is critical if you can't obtain this the shot will be useless. After focus compose your scene set your camera at ISO 100, manual mode F11 adjust the shutter speed to give proper exposure increase ISO by one stop and decrease F stop by one (F8) check exposure once you have the exposure recompose your scene. Make sure the camera is in manual focus, IS (image stabilization) is off, set self timer to 2 second delay, check your scene again and release the shutter and don't touch the camera again until the exposure is complete. There is a whole lot more to this and you are limited because of the lack of the bulb feature or a shutter speed greater then 15 seconds.