Mount slewing acceleration/deceleration profile

Craig Young

I have a Planewave CDK20 on an AP1600GTOAE mount.  The OTA + instruments weigh about 160lbs and the mount is spec'd for 220 lbs, so the payload is well within the capacity of the mount.  But when I slew at 600x from point a to b the motor stops instantly and the OTA rocks in the cradle until settled.  Looking at other mounts with large payloads they use a noticeable acceleration/deceleration slewing profile to prevent this.  I did not see any place in APCC setup to set the ramping profile.  Is this not supported on AP mounts?  For the moment I have changed the slew rate from 600x to 240x (1 deg/sec) which is a bit slow getting around the sky, but it still rocks somewhat when slew is finished.  This has got to be hard on the drive system when this happens.


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