Wow you only got an 8" dob 2 weeks ago!
What don't you like about the dob? Do you desperately want tracking and goto?
Are you sure you should rush into such a purchase after only 2 weeks into the hobby? Do you know if your interest in astronomy is going to last?
I'm not trying to put you off or anything, it's your money to do with what you choose, but i'm just thinking of other beginners who started out just like yourself (mintsauce and frosty are 2 that have signed up, there may be others lurking as guests), who think that their 8" dob is a great purchase, as everyone recommended it as a good first scope, but now 2 weeks later you're off to much better and more expensive pastures.
I'd hate for other beginners to think that this hobby requires you to spend > $5000 just 2 weeks after they've already spent $500 on their first scope.
The reason people start out with cheaper scopes like dobs is because they are cheap, convenient, easy to use, and it lets you get into the hobby and all its joys without outlaying too much money, at the very least to see if you actually enjoy stargazing. You might find that the combination of bad weather, clouds, wind, cold, dark, light pollution, dew, bad seeing all put you off actually getting out under the stars and observing.. so that's why more experienced people than myself recommend dobs for beginners.
As Dave47Tuc says, the best scope you can get is the one that gets used.. You've only had your dob for a couple of weeks - how many nights have you actually been out and spent a couple of hours observing?
Anyway of course it's totally your decision.. if you can afford another new scope straight away then that's great.. i'd be careful about lying to the wife about its cost though - the initial outlay is only the start as Paul and Stuart have said.. this can be a very expensive hobby if someone wants it to be. If you start lying now you may never be able to go back and you'll always be hiding your purchases from her. Anyway again that's your decision and isn't really my business.
I'll stop ranting, I just don't want other beginners to think that 8" dobs are no good and that they'll have to spend > $5000 on a new scope 2 weeks later. It's not a common timeframe for such a transition. Many people have had (and continue to have) many years of enjoyment with dobs and enjoy pushing it to its limits.
Also remember, all of my thoughts above are my personal thoughts and opinions only, of course you can choose to ignore them or take them with a grain of salt of whatever you wish.
Good luck with your next decisions, it sounds like you're learning a lot which is great.
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