Author Topic: Friction drives. Potential problems?  (Read 1729 times)

exjeraca

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Re: Friction drives. Potential problems?
« Reply #15 on: January 22, 2018, 08:58:52 PM »
I have the G53F as well! Great mount and behaves the same as the mesu, a bit more portable and easier too balance due to the fact you have the roler tension mechanism "external" so you can decouple the friction drive, a bit more prone to slippage, but that's more of an indication you are not well balanced

Mesu we have remote has operated over a range of -15 to 25, even took rain, no problems so far.
Though the mesu has encoders, they are on the motor, so you do loose position, as an extra you can have additional encoders on the Ra and dec shaft ... even high res like renishaw to do unguided imaging.

/Yves

Tommy Evans

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Re: Friction drives. Potential problems?
« Reply #16 on: January 23, 2018, 07:27:40 AM »
Quote
Mesu we have remote has operated over a range of -15 to 25, even took rain, no problems so far.
Though the mesu has encoders, they are on the motor, so you do loose position, as an extra you can have additional encoders on the Ra and dec shaft ... even high res like renishaw to do unguided imaging.

/Yves

Hello Yves,

Mine came with encoders on the RA and DEC axis as standard and I guess, nowadays, all Mesu 200 mounts come with these included as standard.

Secondly, when you park the mount, and power off, unless you manually move the mount in either axis, it will remember its position when you power up again, thanks to the lo-res encoders on the RA and DEC axis.

Ronald Saldana

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Re: Friction drives. Potential problems?
« Reply #17 on: January 30, 2018, 11:26:10 AM »
I have asked many people about gemini. No iussues at all, people loves it, but polar 2 is a little tricky. No ground isolation for it (a little wired thing)

blufdestholreng

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Re: Friction drives. Potential problems?
« Reply #18 on: January 31, 2018, 11:34:45 AM »
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I have asked many people about gemini. No iussues at all, people loves it, but polar 2 is a little tricky. No ground isolation for it (a little wired thing)

What do you mean "no ground isolation"?
And about Pulsar2 - I would use the mount in my observatory, mainly with my computer, so I don't really care that much how good goto controllers etc. are.

erafquacor

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Re: Friction drives. Potential problems?
« Reply #19 on: January 31, 2018, 01:18:38 PM »
cool, finally ... what resolution are the encoders on Ra dec, if enough it could be used to do interpolation so you can do unguided imaging ...

/Yves

ciomasbure

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Re: Friction drives. Potential problems?
« Reply #20 on: February 09, 2018, 11:17:50 AM »
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cool, finally ... what resolution are the encoders on Ra dec, if enough it could be used to do interpolation so you can do unguided imaging ...

/Yves

No, they are not from my understanding. High resolution encoders are an option.