Quote:
Originally Posted by Ukastronomer
Two things confuse me
1. Why would you want to see if you can remove it without needing to remove it
2. How can it be too big
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Hello ,
My calculations say the supplied secondary is oversized for a 12" F/5 system ,
I can drop down a bit ( secondary size ) to get less visual defects by going to 20% central obstruction .
Cheers
Bobby .
