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There are at least two types of astrophotograpers..those who come from photography and those who come from astronomy...an astronomer will rarely be concerned about a Newtonian and know to keep the fl a little slower to avoid tedious adjustment or be aquianted with proceedures and not worried about such adjustment and photographers who just become irrationally afraid of using a Newtonian and believe a small costly refractors side steps the need for adjustment.
For my expeience I found setting up my 80 mm refractors way way more tedious than any Newtonian scopes..you know you do have to get that distance between the sensor and the reducer perfect ..isn't that just a little mucking about?
With a refractors you won't go past six inch app but with a Newtonian that is the app you start with..and you can go to 12 inch relatively cheaply...130 mm refractor costs more than a 12 inch Newtonian...just go f5 if you want simplicity..er isn't that usually the fl of a refractor for photography?
These fears re Newtonians are to a large degree unwarranted.
Think of the money you spend to not have those colours appear in a refractors.. you know those colours that don't appear in even the cheapest smallest Newtonian...when Newton invented his scope it was revolutionary because no colour problems...what did Hubble go for?
Now getting into a RCT...hmmmm I would start with a six inch Newtonian in the first place...perhaps become involved in astronomy before applying the desire to photograph..would not hurt.
Alex
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