Thread: [SOLD] EOI:Vixen SD81S refractor focuser+7:1 dual speed attachment
View Single Post
  #3  
Old 07-08-2019, 10:14 AM
N1 (Mirko)
Registered User

N1 is offline 		 
Join Date: Oct 2013
Location: Dunners Nu Zulland
Posts: 1,665
Hi Andrew, what internal tube diameter will this go into please? Vixen says 90mm tube diameter but that's OD I presume.