Mental, use the link in my signature to get to Istar scope club. It's all about refractors.... nothing else. As a dedicated refractorholic it's the best place as is cloudy nights refractor forum.
I have a 4" f5 with a 28mm 68deg ES eyepiece that gives 3.7 degree FOV I think which at a dark site would be amazing a bit curved similar to a fast reflector but nothing that really bothers me too much. Check out Istars lenses on the Istar site...cheapish round $500 for a 6" achro.
Matt
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