I found some loose bolts on the mount, but after fixing that ones the guiding still showed the same problem i had before. I also tried to balance the mount, but i made the error still bigger.
The next thing i tried was correcting the guiding error less aggressive. Instead of modifying the rotation speed by 100% in case of a small difference, i tried much smaller modifications, like 10%. It seems this worked. The error became much smaller.
The blue line shows the error what i had last time, the red one shows the error I had this time. This is much better, but the value was jumping up and down each step. The reason of this that a too bright star was selected for guiding.
Next steps are:
- make the corrections more smooth
- find the proper pre-set speed for the motor, so less corrections will be needed, and the error value will move around zero and not around 2-3, like now
- calculate the centroid of the star more precise and get rid of this up-and-down jumping
But still, i managed to take a picture, which is not a complete disaster. ( 3x30' exp, iso 800 )
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