Thread: Focus/Collimation issue
View Single Post
  #7  
Old 21-03-2020, 05:23 PM
multiweb's Avatar
multiweb (Marc)
ze frogginator

multiweb is offline 		 
Join Date: Oct 2007
Location: Sydney
Posts: 22,062
You can get a pinch at low temperature if the mirror or lens cell contracts around the glass.
Reply With Quote