Best Dithering Settings in APT?

[smr]

Hi,

I'm just wondering, are the default dithering values in APT fine, or should I modify them for better results?

Here are the default values...

[david_taurus83]

Are you dithering with PHD?

[smr]

9 minutes ago, david_taurus83 said:

Are you dithering with PHD?

PHD2 yeah.

[david_taurus83]

So in the settings in PHD, there is the dithering scale. If its set to 1, then it will dither a random movement by 1 pixel or less. If your guidescope and camera pixel scale is 3 arc seconds, for arguments sake, then a dither scale of 1 means your mount will move a random amount between 0 and 3 arc seconds. If you change the scale to 2, then the dithers will be bigger, up to 6 arc seconds etc. The scale in PHD will multiply the scale set in PHD. So if its 2 in APT and 2 in PHD, it may dither up to 12 arc seconds.

Its probably easier to just leave either APT or PHD at 1, and only adjust the other to suit.

[smr]

19 hours ago, david_taurus83 said:

So in the settings in PHD, there is the dithering scale. If its set to 1, then it will dither a random movement by 1 pixel or less. If your guidescope and camera pixel scale is 3 arc seconds, for arguments sake, then a dither scale of 1 means your mount will move a random amount between 0 and 3 arc seconds. If you change the scale to 2, then the dithers will be bigger, up to 6 arc seconds etc. The scale in PHD will multiply the scale set in PHD. So if its 2 in APT and 2 in PHD, it may dither up to 12 arc seconds.

Its probably easier to just leave either APT or PHD at 1, and only adjust the other to suit.

Thanks. I just left it at the default dither settings. Seems to work ok, I think it's just because the Canon 600D bands a lot more than the 80D and it was a bit of a surprise as to how much banding the 600D has. 

[david_taurus83]

I never noticed bandinh when I had a 600D. Maybe if it got really hot in Liveview when I left the screen on and didn't flip it out.