Connecting 2 Astro decoders to 1 satellite dish?

I want to connect 2 Astro decoders to 1 satellite dish. I recently moved into a new place which has Astro included, so has the decoder and account (which the landlord pays for). I had Astro installed in my old place and have not cancelled it. Can I connect the 2nd decoder to the 1 satellite dish so that my kids can watch whatever they choose on their TV and my wife and I can watch what we want on our TV? Please help.