Alt drifts when making az adjustments and vice versa
Posted: Mon Jul 16, 2018 9:27 pm
Hi All
I am a newbie coming to terms with PA. I live in surburbia Melbourne and have no chance of seeing Octans in my backyard. I have therefore "splashed" out on a budget 50mm guidescope + ASI120MC (equivalent) camera to do PA using Sharpcap.
I have managed to get plate solve going and find that I am down by a couple of degrees and left by a couple of degrees.
I proceed to adjust Alt and got that to about 30" and started to adjust the Az. As I bring the Az error down, I find that my Alt error increase again. When I get the Az error to say 30", and adjust the Alt error down, the Az error moves.
It is as if the mount is not level, even though the spirit indicator says it is.
Any ideas anyone?
Thanks
I am a newbie coming to terms with PA. I live in surburbia Melbourne and have no chance of seeing Octans in my backyard. I have therefore "splashed" out on a budget 50mm guidescope + ASI120MC (equivalent) camera to do PA using Sharpcap.
I have managed to get plate solve going and find that I am down by a couple of degrees and left by a couple of degrees.
I proceed to adjust Alt and got that to about 30" and started to adjust the Az. As I bring the Az error down, I find that my Alt error increase again. When I get the Az error to say 30", and adjust the Alt error down, the Az error moves.
It is as if the mount is not level, even though the spirit indicator says it is.
Any ideas anyone?
Thanks