|
gary,
Thanks for the input.
How do you actually measure (other than with micrometers etc) the NP error independantly from the CH error?
If the CH error is corrected, relative to the RA axis (not just the Dec axis) does this not also correct the inherent NP error?????
The answer: No!
As the dec axis "wobbles" unfortunately so does the optical axis...
As Gary/ Barry have said - the axes need to be corrected to sit at 90 degrees to each other - first! Then the optical axis aligned with the RA axis.
Apologies for adding to (my) confusion!
Last edited by Merlin66; 08-07-2013 at 05:52 PM.
Reason: Correction!
|