Focuser for the Solarmax 90

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ffellah
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Focuser for the Solarmax 90

Post by ffellah » Mon Jun 29, 2020 5:19 pm

Hello all: I am considering upgrading the focuser of my SM90 to a Crayford style focuser. What are the options at various price points ?

Thank you,

Franco



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Re: Focuser for the Solarmax 90

Post by marktownley » Mon Jun 29, 2020 8:26 pm

Image2020-05-10_09-52-18 by Mark Townley, on Flickr

Feather touch for me every time!


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Re: Focuser for the Solarmax 90

Post by ffellah » Mon Jun 29, 2020 8:38 pm

Thank you, Mark, I will check the pricing out. Any other suggestions ?

Franco



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Re: Focuser for the Solarmax 90

Post by rsfoto » Mon Jun 29, 2020 9:13 pm

ffellah wrote:
Mon Jun 29, 2020 8:38 pm
Thank you, Mark, I will check the pricing out. Any other suggestions ?

Franco
Hi Franco,

Eventually a rack and pinion ?

I personally do not like the Crayford system.


regards Rainer

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Re: Focuser for the Solarmax 90

Post by marktownley » Tue Jun 30, 2020 6:09 am

ffellah wrote:
Mon Jun 29, 2020 8:38 pm
Any other suggestions ?
There are Moonlites too I believe. However, while the moonlites are huge upgrade from virtually any stock focuser, and, I have 4 moonlites on different scopes. There are fundamental things I really don't like about them - the draw tube pits and chips where the roller bearings ride over it leading to a gritty and bumpy feel when focusing which I don't like, and secondly the bearings go on the focuser, 3 of mine have suffered broken bearings through nothing but normal use. Now i've read on CN many times that Ron at Moonlite will happily replace draw tube and send out new bearings, and I hear nothing but excellent things about his customer service and fair play. However for me the design of the Moonlites is fundamentally flawed and it frustrates me, especially at the money!

The price difference between the Moonlites and Feather Touch really isn't huge, but my perspective is a Moonlite is a 10 year investment whereas a feather touch is a lifetime investment.

Your other options I guess is getting a coupling ring made up at precise parts, then there is a whole raft of third party focusers with the standard m90 connection you could mate to it https://www.teleskop-express.de/shop/ad ... %20/page/5

Mark


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Re: Focuser for the Solarmax 90

Post by ffellah » Tue Jun 30, 2020 7:57 am

Thanks a lot, Mark, for your post.

Franco



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Re: Focuser for the Solarmax 90

Post by Highbury Mark » Wed Jul 01, 2020 12:13 am

I don’t have experience with the SM90, but with a Lunt 50 I had a Moonlite focuser (very nice, no problems at all), and with Lunt 60 and my current Takahashi FC-100, I have Feathertouch 2” focusers. It’s been said a million times before, but they are in a different class. Even with significant weights hanging off the end, they are just superb,


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Re: Focuser for the Solarmax 90

Post by DeepSolar64 » Wed Jul 01, 2020 5:07 am

In time I too will upgrade from the stock helical focuser. It works but doesn't feel " natural " to me. I would have certainly preferred a rack and pinion focuser over the helical. Moonlite and FeatherTouch are certainly even better. Still, it helped make the SMII series more affordable. They are discontinued now. The SMIII series all have two speed rack and pinion focusers.


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