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CEM60 RA periodic spike: before and after repair (clean)

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#1 hhelib

hhelib

    Sputnik

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Posted 25 February 2021 - 07:45 AM

Hi Friends,

 

Previously, I got some annoying spikes on RA when guiding so I tried to open on CEM60 up and do some cleaning on worm and gear.

See:  https://www.cloudyni...tart-ra-spikes/

 

Recently I got a chance to measure PE on my RA axis again and I'd like to share the wave with you and hope other people have the same issue can repair your mount based on this experience.

 

Firstly, this is a tiny metal I found in my latest worm cleaning. It could be the cause of RA spikes.

1.jpg

 

Secondly, my PE measure after cleaning, it is much smooth than before.

2.jpg

3.jpg

 

This the PHD2 log after cleaning.

Attached File  PHD2_GuideLog_2021-02-25_001821.txt   40.59KB   8 downloads

 

Now I still have a question would like to discuss with you and I have not tired till today. Will engage and disengage RA knob a bit influence the PE on CEM60 mount? 

Thanks

Sheldon



#2 alphatripleplus

alphatripleplus

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Posted 25 February 2021 - 08:38 AM

Glad it improved things for you.




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