Barlows/powermates

I have a newly aquired ccd and was wondering what is the best barlows I can get?
I have a few 2" EP's and would like to use the barlows visualy as well as for ccd use. I was thinking a 2"4x powermate and a 2.5x 1.25" powermate, but without much experience do not know if 2 are necessary or if I should have them at different powers. Can someone please share thier thoughts? What do you have in your case?
Thanks,
Todd Gray

I've had a 2.5 powermate for almost a year now and only recently got the T-ring for it. I wanted to try to image double stars and lunar features with it and my Nikon D70. It works quite well in that application. I have yet to try it on an extented object, but tonight i might try it on the Trapizium. Here is a sample.

Eta Cassiopeia. 12 arc seconds separation. Stack of (8) 13sec ISO200 images cropped to show at 100% resolution. My scope is a Stellarvue 102 f/7.8 doublet APO sitting on a G11. I figure i was imaging at f/19.5 and 1988mm focal length. I guided the exposures with my ST-4.

The results of doing this are encoraging and gives me something more to image with the D70. I suspect it will work with any CCD camera and i aim to try it out with the ST-402ME i ordered.

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