Drift Alignement Equipement & Polar Alignement Questions

[david_taurus83]

You should be able to get more than 8s exposures as yout focal length is forgiving. Are you definitely on sidereal tracking? How are you taking the exposures? Do you have a remote shutter release?

[vlaiv]

Ok, I'm puzzled by two things here.

First - in altitude and azimuth adjustments - RA star motion is at different angle. This should not happen if camera is properly attached to telescope and was not rotated in between alt and az adjustments (and I see no reason to rotate it in the middle of drift alignment).

Second, we can't really say what sort of star trailing we have in that last sub.

Here is top left corner:

This certainly looks like star trailing, but here is upper right corner:

hold on, do stars trail diagonally from top left to bottom right direction, or are they trailing vertically an slightly to the right?

perhaps they are round and slightly out of focus? This is bottom right corner.

bottom left also shows no signs of trailing.

It looks like something else is at play here. Btw - your DARV images look really good except for different orientation - and that is puzzling. Is your mount leveled properly?