Re: Guiding Problems with PHD2 and OnStep

Chris Whitener

Phd2 has several tools to check the mount.
Usually movements that are too short or long are because the pulse runs into mechanical looseness.  A loose movement is called backlash by astronomy folks.  Imagine the following.  A declination that has slop in it.  The first movement may tumble it forward.  Or lose it if backward.   

Try the full phd2 test including the 2 minute backlash test.  It tells a lot.

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