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Focuser "Lumpiness" got me worried..

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#1 shiner

shiner

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Posted 07 December 2012 - 03:31 PM

Hi, I've had a Featherlight focuser on my CPC1100 for eight months now and all gone well.
One of these:
http://starizona.com...users-C654.aspx

Last night I noticed whilst really racking the focuser all the way in (was imaging Jupiter on Webcam) a sort of "lumpiness" or "jumpiness" in the feel of the focuser whilst focusing. The scope still focused but felt wrong somehow. Got me a bit worried. Don't think it is the focuser itself maybe something gone wrong with the mirror cell? It was cold I hasten to add -3C (not sure what that is in F).
Any thoughts folks please?
Rgds,
Steve

#2 Digital Don

Digital Don

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Posted 07 December 2012 - 06:10 PM

Hi Shiner,

It's possible that the lubricatant on the baffle tube is the culprit. -3° C isn't really THAT cold (around 27° F) but it could have an effect on viscosity.

You might try running the focuser lock-to-lock a few times to 'redistribute' the lubricant.

Hopefully, it's something simple like that!

Don :usa:






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