Quote:
Originally Posted by CDKPhil
It is possible that your belt is not tight enough. I read on the SB forum that you could not over tighten the belt. It was Steve or Daniel Bisque that said this.
I would be reluctant to put a lot of pressure on the belt, but when you push in on one side the other side should not move.
I don't know if this would cause the oscillation but it would be worth trying.
Keep in mind this may alter your PEC and TPoint Model.
I have only done some quick tests with the guide function on Sky X, but I have found at my image scale, I had better results unguided.
I did a log and found there was an oscillation also, +- 2 arc seconds. I put this down to the settings. I haven't had a chance to explore this further.
Cheers.
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Thanks, that is very helpful. So perhaps I can tighten it more. I used the Chris Venter video and Daniel commented it had sage advice about the belt tightening and Chris demonstrated that the belt should not bow when reversed which I checked for but my tension may have been a taf more than he seemed to go for. It was approx the same tension as when I removed the casing on the original worm.
2 arc sec error in guiding is massive.
With a bit of weight on the counterbalance I am getting under .4 and most corrections are under .3.
This morning with even longer guide exposures of 10 secs I was often getting 0.0 and then under .3 so its getting pretty close to being spot on. But the weight effect worsens when the counterweight arm is at a higher angle and may be producing a drag causing slightly worse guiding.
Some subs the round stars are breathtakingly perfect. Others very good and close to perfect but needs a tad more.
I am hoping getting this little issue adjusted and a better PEC on a night of good seeing (last night seeing was spectacular) and a new large model and it could be perfect.
Greg.
Quote:
Originally Posted by Mighty_oz
I'm pretty sure they suggest No hand controller connected when doing t-point, pec, etc
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Yes that is right.
Greg.