The night shooting usually takes place on a long exposure that is why all the moving luminous objects leave very evident lines and flames. Let’s try making some experiments with a luminous Ferris wheel.
We’ll need in this case the Radial Blur filter and some of experience working with layer masks.
1. Firstly we need to create a copy of the layer (
CTRl+J).
Select after that the next option,
Filter > Blur > Radial Blur, where we have to move the slider on
Amount on
10 selection. Choose next on the
Blur Method list the
Spin selection. Change after that the
Quality value on
Good and press
OK.

>
Make one more copy of the layer and give to the new copy the
Screen blending mode.

2. Merge down the last two layers by choosing the command
Layer > Merge Down (Ctrl+E) and set for the new result the
Screen blending mode.
This layer we’ll hide with a mask, selecting in the menu the next option:
Layer > Add Layer Mask > Hide All.

Next we’ll select the
Brush Tool (B) to paint the mask accurately with white color to make visible only the wheel.
3. When painting the mask, we need to try not to touch the unmoving objects, like the pavilion or the wheel’s supports. Their blurring could be very inappropriate for our final result. On the other hand, we need all the moving parts of the wheel to be painted out very accurately.

4. Make a copy of the layer

and select for it
Filter > Blur > Gaussian Blur, having a radius of
10.

Make a click on the mask and fill it with black color (
Edit > Fill).