|
Sounds like you're sorted for barlows but IMHO you need at least one more EP. On a budget a decent 15-17mm plossl would be a good idea: combined with your barlows, you'd get three useful focal lengths. But if you don't want to buy any new EPs yet, your zoom might also fill that role (depending on what it is).
In any case, be sure to learn how to collimate the scope and definitely get a collimating tool if you haven't got one yet. A fast Newtonian's performance is particularly sensitive to collimation.
|