This is my first post. Nice to meet you all.
I consider myself a newbie. I was into astronomy years ago, visual only. But a few months ago I decided to take a serious dive into AP. So, I bought the GEM28, and I've been imaging almost every clear night since.
C6 with a F6.3 reducer and a ZWO ASI533MC Pro camera
Guide Scope is 240mm F4 w/ the ASI290MM mini
Using PHD2 and NINA software
I live in a Bortle 7
My question is about the guiding. I'm trying to figure out if the performance is above, below or average for this mount class. It seems to be very inconsistent. I get guiding anywhere from 0.5 to well over 1 arc secs. It will guide great for few minutes (0.5-.0.7), then shoot up well over 1 for no apparent reason. I find myself throwing out about 25% of my images because of guiding errors. Now I know there are a lot of factors which will influence guiding. So is this typical for this mount class? Is it all I can expect, or is there something I can do to improve the consistency? Tweak PHD2 settings, tune the mount, travel to a dark site to test, or buy another mount?
Any advice would be greatly appreciated.