Quote:
Originally Posted by Slawomir
Greg - a relatively fast good quality f6.3-6.5 130mm refractor combined with a nice 0.72x or 0.75x reducer will give a similar FOV to a f5-f6 4” refractor.
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Right. Not many 130mm scopes are F6-6.5 though. Most seem to start at F7,
AP has an F6.
Greg.