Found this rather neat app that can be downloaded onto Iphone for $2.99 or used through your PC. Its listed as a Computational Knowledge (search) Engine.
Heres the Wiki on it.
http://en.wikipedia.org/wiki/Wolfram_Alpha
Here's the site for PC.
http://www.wolframalpha.com/
From an amateur viewpoint can get some really useful data (i.e. Radial Velocity or what size aperture is needed and a current sky location) re NGC & IC objects with a DSS image.
http://www.wolframalpha.com/input/?i=ngc5967
Peter