Optimum viewing power for deep sky objects

[fok4tel]

Hi everybody,
I am wondering what is the optimum magnification for viewing deep sky objects, especially galaxies and planetary nebula?
Is 200X sufficient? I asked because I am considering an eyepiece that yield 200X and my viewing preferrence is DSO.

[janoskiss]

Please continue discussion in existing thread in Observational Astronomy:
Optimum viewing power for deep sky objects (http://www.iceinspace.com.au/forum/showthread.php?t=31341)