What do you want to observe with a small scope ?
The reason I ask is that having tried an ETX I found it to be a horrible compromise - they are f/15 - obviously supposedly a lunar & planetary scope - the field of view is far too small to be useful for anything else. However, IMHO the aperture is too small and the focal length isn't long enough to give a satisfactory view of the moon, Jupiter or Saturn. Lastly the mount and drive system just get in the way for such a small scope, they are really irritating.
I'd suggest a 4" ED refractor around the f/7 mark if widefield is more your thing. If you want a catadioptric for size reasons, try to get f/10 or f/12 - IMHO f/15 is just plain too long with modern eyepieces. The Orion maks 127-150 mm would do, and the Celestron 6" SCT on a one-arm fork looks like a better buy than the ETX, more aperture, it's f/10 and still small/light enough to be a grab & go.
Also take a look at your eyepieces - for an f/15 Mak you'll want 50, 30, 18 and 12mm.
Last edited by Wavytone; 31-05-2009 at 09:52 PM.
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