[Todo43 (Lachlan)]

Hi all,

I recently bought an ASI Air Pro. Below is my gear for reference. I have been out imaging about 4 times with it and it has all gone quite smoothly except for the guiding. Before the ASI Air, I had so many nights where everything went amazingly with the guiding via the computer being under 0.5". When I now use the ASI Air, the lowest I can manage is about 1.75" for an extended period of time. It sometimes dips below 1" but only for about 15s. I have tried copying the exact settings from PHD2 to the ASI Air (Calibration Steps (ms): 1250, Ra Aggressiveness: 70%, Dec Aggressiveness: 100%). I then use between 0.5-1s exposure for the guide camera. When I do all that, it goes ecstatic and guides like crazy. Unfortunately, I don't have any screenshots of the actual guiding but I can get them on the next clear night.

Any ideas to fix this? guide scope is focused, the mount is polar aligned below 1'. Mount is balanced as well.

Skywatcher AZEQ5
SVBONY 50mm Guide Scope
ASI120MM


1600MM
Sharpstar AL-90R
EAF
EFW
ASI Air