[Dober (Steve)]

Hi,


I am looking to get some comments on what effect good or bad would result in changing a f6 to f7.



My scope is an 8", 1200 fl. thus f6. I am wondering what issues would arise if that was to occur. Fixed length of tube and position of secondary would be an issue and slightly narrower field potentially?


My knowledge is limited, I have a few thoughts but I might as well hear it from those with more experience than I have at present. The reason is I might have the opportunity to get a better quality mirror than that supplied with the scope.


This is most likely a no no but thought I would ask, its all learning after all.



Thanks in advance for any comments.


Steve