View Single Post
  #8  
Old 04-10-2010, 04:03 PM
JethroB76's Avatar
JethroB76 (Jeff)
Registered User

JethroB76 is offline
 
Join Date: Oct 2005
Location: Tassie
Posts: 1,104
Quote:
Originally Posted by alistairsam View Post
Hi,
could someone help with the alignment process for analog setting circles on a Dob mount?
I have an 8" Dob mount, and if I print out a graduated scale on the base, where should 0 deg point to?
I have a digital angle gauge for alt, so that should be straightforward, but was not clear on the azimuth.
As in, where on the base should the 0 deg be? Can be anywhere you like really.
The way I used to do it was to have a moveable pointer for this scale.
So I would setup the scope and zero the alt (electronic angle finder) on a level surface. Determine the az coord of my alignment star and centre it in an EP. Then clip the pointer onto the base to point at this az. Next check the alt was what it should be, and then check the overall alignment by "finding" another object.
Reply With Quote