View Single Post
  #1  
Old 19-08-2020, 09:30 AM
xelasnave's Avatar
xelasnave
Gravity does not Suck

xelasnave is offline
 
Join Date: Mar 2005
Location: Tabulam
Posts: 13,805
Simple focuser Mask.

Forgot to buy a bahtinov mask?
Try this.
A cardboard disk to fit your scope, draw in a line marking the diameter, about a third to a quarter in from each edge draw a small circle say 2 cm ..cut out two holes where your circles are...place disk on scope..focus is reached when you see only one circle or object thru EP or on camera.
Alex
Reply With Quote