Excellent. If you are doing Stars, then shoot several shots (use interval.lua script) and then create a smart object and stack them Mean/Median in Photoshop. This will get rid of the noise.
If doing long exposures for cityscapes or skylines, then shoot HDR (I use 9 images shot in RAW with 1 EV spacing = +4 +3 +2 +1 0 -1 -2 -3 -4) then merge to HDR.
I just shot a super resolution photo of my city's (Mumbai's) night skyline (using this technique = https://www.youtube.com/watch?v=0tGR-Q9Pkjc
) using my 16MP camera (PS 160IS) and resulted in a 60MP Super Resolution HDR image. It is by far the best shot I've EVER taken! I could zoom to such an extent that I never thought possible even for a DSLR!
Being Super Hi Rez, I could zoom to extreme levels
Being HDR, I could get the neon signs AND the dark buildings in the same image!