To me, it looks like the article is intended for an interested "not yet beginner", to just get them to try out astrophotography. I think it does what it set out

To me, it looks like the article is intended for an interested "not yet beginner", to just get them to try out astrophotography. I think it does what it set out to do. FWIW, Michael Covington has written some fairly detailed astrophotography books: http://www.covingtoninnovations.com/books.html http://www.covingtoninnovations.com/books.html They are well worth reading.