Friday, January 4, 2013

Why are my pictures coming up small?

(THIS IS ON ASTROPHOT0GRAPHY)
Hi there, i was taking a picture of Jupiter through my Meade LX200GPS 12". i was please with the picture but when i compared it to other pictures on Google (taken with other LX200GPS 12"s Jupiter was 10 times bigger. I take about 30 second exposures and on ISO 800. If someone could please recommend a good camera setting for Nikon D3100 taking pictures. And also why are my pictures small and how can i make them bigger.
Thanks
>>> Why are my pictures coming up small?