Calculating polar alignment error from the arc length and amgle

[Arun soman]

Hi I am totally new to this hobby and all I know is polar alignment is very important 

My question is this can we compute the deviation from true north and the inclination from the length of arc, the angle of the arc,  the exposure time and ra,Dec to which the camera was pointing when the exposure started?

Is there a mathematical formula

 

[Guest]

Hello and welcome to SGL..

Maybe the LINK below can assist you.. ??

http://celestialwonders.com/tools/rotationMaxErrorCalc.html

Else, see here.. http://celestialwonders.com/articles/polaralignment/PolarAlignmentAccuracy.pdf

Regards

 

Martin