Depends a bit on what mount you plan on using? I found that an ED80 on an HEQ5 works beautifully for deep sky stuff (nebulae, larger galaxies). If you plan on guiding a simple Finderguider also works well with this setup. Nice wide field. Planets and smaller galaxies (which most of them are) benefit from a longer focal telescope, which are generally heavier and benefit from a slightly bigger mount (EQ6 and the like).
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