sticky Re: Astrophotography Done with the iEXOS-100, EXOS 2, and G11 Post your Pictures and Details! Lets Show What These Mounts Can Do. #iEXOS-100 #G11 #EXOS2 #astrophotography
You might want to read through this (unless you are a pro and it sure looks like you are) https://espmc-eight.groups.io/g/MAIN/topic/31941122#3826
Seems to me that for the focal length of that ST80 and the pixel size of your guide camera, you are getting about all you can get.
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired