Its quite amazing you can capture saturn in Singapore and such closeup of the moon. I thought its not possible.
Actually you can see many objects in Singapore and you do not need very dark locations. The pictures I took were from the carpark at my place next to the PIE.
Of course a telescope is essential to get these shots. Photo below is the group of sky watchers with our equipment.

The scopes from left are 8" newtonian, 4" APO refractor, 5" APO refractor and my 8" SCT.
Below is the link to the local astro community. You can see other much better photographs in there including Deep Sky Objects like galaxies, nebulas and clusters.
http://www.singastro.org/index.php