Thanks all for your input.
Yes you are correct its a VC-200L clone scope.
How thin would the vanes have to be ground down to eliminate this effect?
Quote:
Originally Posted by LewisM
Ah, the Vixen Blocky Stars - I bet the scope was either a VC-200L or an R200SS. 
Well known issue, usually resolved by thinning the over-thick spider vanes, making sure the primary mirror clips aren't stressing the mirror and making sure not to under-sample images. |