SM40 crayford?

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hopes2
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SM40 crayford?

Post by hopes2 » Sun Nov 12, 2017 3:24 am

Greetings,

Can someone please tell me where I can find a crayford focuser for the SM40??

Thanks,

Dan

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marktownley
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Re: SM40 crayford?

Post by marktownley » Sun Nov 12, 2017 4:17 am

Hi Dan

I've had the SM40 for years and never found a replacement focuser. Sorry.

Mark
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hopes2
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Re: SM40 crayford?

Post by hopes2 » Sun Nov 12, 2017 3:08 pm

Mark,

Thanks for your reply!

I have located a shop in your neck of the woods that has made an adapter that fits.
They made one for a member over at Cloudy Nights.

Since it was a few years ago, they require dimensions that I'm not sure I can provide from way over here.
I'm trying to exhaust all options that might be here in the States.
Talk to John if you are interested.

http://www.orionoptics.co.uk/

Thanks,

Dan

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marktownley
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Re: SM40 crayford?

Post by marktownley » Sun Nov 12, 2017 5:57 pm

Hiya Dan,

Thanks for the link. I've kinda got used to the helical on my OTA now to be honest, it's full of backlash and slack, but i've kinda got used to how to handle it. My problem was never being able to release the black section that is screwed onto the back of the gold tube, no matter how much I tried I couldn't undo it to reveal the threads.

Mark
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http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!

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hopes2
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Re: SM40 crayford?

Post by hopes2 » Wed Nov 22, 2017 6:44 pm

Understood, I've read that some threadlocker may be involved.
I think I may start looking for a small refractor with a crayford to use with the filters.

Best,

Dan

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