C11 electric focuser

[jambouk]

Does anyone have any experience of one of these:

https://www.astronomics.com/jmi-motofocus-electric-focuser-black-orange-tube-celestron-c11_p3359.aspx

Do they allow the focus to be adjusted sufficiently gentle enough for planetary imaging, or would it be better to motorise an SCT rack-pinion / crayford style focuser attached to the visual back?

Thanks for any replies.

James

[riklaunim]

Motocryford is much better than motofocuser on the primary.

[jambouk]

Thanks.

[jambouk]

Is there an easy to fit kit for crayfords?

I've got a revelation astro (ravk-pinion) dual speed one but can't see an off the shelf motorising kit for it.

[hobsey]

How about this?

http://www.astrobuysell.com/uk/propview.php?view=76999

[Stu_2011]

Hi

I have the Skywatcher Crayford on my 925 CPC and I bought a JMI focuser for it, I think I bought it from Rother Valley Optics. Works really well and bolts straight on but it was £150!

I think its fairly easy to fit the standard Skywatcher focuser (called autofocuser I think) to the Skywatcher Crayfords, I think someone has done a YouTube video on the way to do it. This costs £50. It may fit on your Crayford as they all tend to be fairly similar.

Thanks

Stuart.

Sent from my iPad using Tapatalk

[jambouk]

Thanks for this.

I'm investigating the £44 SKywatcher option first.

James