Quote:
Originally Posted by allan gould
Ben
If your dad has a milling machine may I suggest he knock you up an x/y shifter. I can send you photos of one I had made up and since the 90 mm
mak is solidly bolted to the main scope via the losmandy rail, I use the x/y finder and a parfocal eyepiece to find and centre a guidestar. Very quick, easy and fool proof. And no flexing. Rings I find are almost certain to give flex between the main scope and guider as the mount tracks. Others may disagree but that's been my experience. At the moment I can easily photograph at 2500 mm fl using a dsi ii pro cammera and that's normally tough to do due to the magnification.
|
I have my guidescope locked down solid as well and use the Orion X-Y Guidestar finder to adjust my guidecamera position. Very effective. It also does eliminate one source of flexure quite well.