Leaving aside the fact that I know absolutely nothing about astrophotography...
I think the first bit of advice I'd give is before you buy anything to visit with and observe with someone (or several people) who is (are) knowledgable on the subject.
Too often I read/hear about people new to the hobby who rush out and start buying stuff which that may not need or that is inappropriate for their interests...
There is no substitute for experience (your own or someone elses)...heck, I'd give the same advice to visual folks too...
Maybe a law should be passed to ahve some kind of "cooling off" or waiting period before astro gear can be purchased?
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