Quote:
Originally Posted by whzzz28
Your problem might not be guiding related yet.
No matter how good your guiding is, if your polar alignment is far off, your stars will be terrible.
A good test: don't do any guiding. Point the scope somewhere (globular clusters work well) and begin sidereal tracking. Take a 10sec shot. You should have minimal star elongation. If elongation is high, then it's obviously not guiding that is your issue. Maybe try a 20sec exposure as well - elongation shouldn't really be present if your polar alignment is good at this exposure time either.
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That is quite likely to be the issue as well since I was struggling aligning with alignmaster
Every iteration was yielding large errors, over 10 deg.
But if polar alignment is the main issue then won't the guidestar drift considerably and show up in the graph? How does the guidestar not drift with bad pa?
When my pa was really bad, the guiding graph just kept going out, once I got pa better, the graph improved.
I've read that guiding can't correct pa more than a certain extent, hence the confusion with what the flat graphs and oval stars mean.
I'll focus on alignment first, then increase guiding parameters, then look at any tilt.
I have the cats eye auto collimator, I'm guessing that would show up focuser tilt.