Eorror values of polar alignment

[rharter]

Hello,

 

The error sum of errors in azimuth and altitude results from different sources (e.g. telescope flex, etc.) and increases with a larger number of stars.
If I for example do a polar alignment with about 4 stars on the east following the manual, I get an error in polar azimuth: 0.18 and polar altitude : -0.21 (fixed mount) so far so good. If I for example, make a larger pointing file with mouse grid of about 15 stars per east and west I get a resulting polar azimuth error of :  +4.12 and a polar altitude error of : -2.34.

What values do you gain from your pointing files? Are my error values exceptionally big compared to the polar alignment process with only 4 stars?

Thanks for your input!

 

kind regards

Ralph

[Gerald]

Dear Ralph,

 

There must be a difference in polar align values between the roughly alignment and the result after a bigger pointing file - this is caused by different sources as you already assumed (scope flex etc.). But finally as an aceptable good result for polar align - all values lower then five arcminutes is perfect!

 

best regards

 

Gerald