hi, and welcome to IIS.
the mounts that these scopes come on are so flimsy that they are not capable of the smooth motion needed for astrophography. as has been said, you could spend $1000+ and get yourself a real nice set up, but im thinking your on a tight budget if your looking at these cheapies.
i dont think its a good idea to get straight into astrophotography, there's a lot to learn. i had astrophotography in mind when i was looking at getting my first scope, but its been a year, and all ive done is taken a few pics of the moon with a webcam. so i recommend you get maybe a 6" or 8" dobsonian, and start out visual. and you can get a nice webcam later on, when your ready.
have a look at the dobs here:
bintel
andrew communications
Jarrod