What's happening here? (SharpCap PA)

[CaptainShiznit]

Hey,

For the last couple of nights while polar aligning with SharpCap, Polaris is dancing about when I get close to alignment. I'm then seeing quite bad guiding in PHD until I try polar alignment again. On the second try, Polaris is still dancing about as shown but I guess with a bit of luck I'm getting closer to the money and my guiding looks better with under 1.00" total error.

I've played with the settings in SharpCap as far as the black threshold and minimum star pixel but it doesn't seem to change the dancing Polaris, only making it a bit harder to solve.

[Atreta]

Hi, what exposure length are you using? 

[CaptainShiznit]

20 minutes ago, Atreta said:

Hi, what exposure length are you using? 

Hey. It's a Skywatcher Evoguide 50ED, 242mm

Edit: misread the question. 2 second exposures.

Edited April 11, 2020 by CaptainShiznit

[Atreta]

I don't know why you are getting bad guiding. I leave mine after i get around 00:00:15 and get good guiding.