Moving the counterweights up the shaft towards the mount to balance your rig does reduce the moment of inertia but it doesn’t necessarily mean you will notice an improvement in guiding error. Guiding is more dependent on other factors like atmospheric conditions (including humidity , wind, temperature, Jetstream , high cloud etc.. ) mechanical deficiencies in the mount and guiding equipment and settings.
I’ve experimented a few times with 3 x 5kg and 4 x 5kg counterweights up and down the shaft with good balance on my EQ6-R mount and didn’t notice any significant positive or negative knock on affects in guiding.
But yes reducing moment of inertia is a commonsense approach to assisting the overall guiding, so I adopt that measure by moving the counterweights towards the mount where possible whilst achieving good balance
Attached is my procedure to balance an EQ mount
Thanks for posting
|