|
Hi and welcome to IIS!
I don't want to sound too pessimistic, but I think you're going to have a shocking light pollution problem. I think you will be very limited for deep sky observing and may be limited to bright solar system objects - moon, Jupiter, Mars, Saturn, Venus. Are you planning to take your scope our of your abode or use it from your balcony? If you're going to use it from the balcony, do you have a view of the ecliptic most of the time - ie do you see the moon from it? If so you will have a good shot at the planets.
For planetary observing, or any observing really, an 8" is much better than a 6". It would be worth having a look through someone else's equipment locally first though to get an idea of what you'll be able to see from the skies of a city as big as Shanghai.
All the best.
|