Thread: Back focus issue
View Single Post
  #10  
Old 07-06-2020, 10:58 AM
Astronut07's Avatar
Astronut07 (Ben)
Registered User

Astronut07 is offline 		 
Join Date: Apr 2018
Location: Wollongong
Posts: 147
Simon

According to ZWO information camera sensor is 6.5mm inside housing
So if u add 6.5mm plus OAG 29mm ( 35.5mm ) total

Minus 35.5mm from 75mm= 39.5mm

Therefore if Im correct you would need 39.5mm in spacers to get correct focus
Attached Thumbnails
Click for full-size image (343E5BEA-9C68-49D5-81A1-A52411958B15.jpeg)
190.8 KB18 views
Reply With Quote