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Motor focus

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#1 joeman

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Posted 06 May 2014 - 08:54 PM

I am seriously considering addition of a Moto focus to my 8SE. I was thinking this would address any frustration with bumping the scope while focusing on the single fork arm with somewhat high load burden with an 8 inch scope. How helpful May this be?

#2 Bob Griffiths

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Posted 07 May 2014 - 02:44 PM

Guess nobody has been awake for the last few days...

BUT YES .... I use a MF for that exact same reason..works great

Bob G

#3 Peter9

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Posted 07 May 2014 - 03:40 PM

Hi Joeman,

All vibrations caused by manually focusing the 8se were eliminated by fitting a motofocuser.
It made the 8se more of a joy to use.

Regards. Peter.

#4 pem1

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Posted 07 May 2014 - 07:44 PM

Another advantage with a JMI motofocus is the ability to make ultra-fine adjustments.

#5 joeman

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Posted 07 May 2014 - 11:03 PM

Thanks!!! It will be on more short list.....after I recover from the ginormous scope and accessories purchase I FINALLY just made.

#6 Arctic_Eddie

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Posted 08 May 2014 - 06:55 AM

Orion has a motofocus designed for their refractors. With a little bit of DIY, you can fabricate a mounting bracket and coupler for the SE.

http://www.telescope...uFocus-Elect...

#7 oliverschurer

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Posted 09 May 2014 - 07:25 AM

I tried for a very long time to just accept the focus shake on my 8se. Then I purchased anti-vibration pads for the tripod feet. Then I conciously tried to develop and use a 'very light touch' on the focus knob when focusing. Then I used a large foam rubber wheel from a model airplane over the focus knob to make fine adjustments easier. Then I installed and used a FeatherTouch Micro. Finally I removed that and switched to a JMI MF - it was like buying a whole new telescope. Problem solved. I still don't know why it took me so long.

#8 SpaceWatcher

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Posted 10 May 2014 - 01:11 PM

I LOVE the JMI motofocus - no more vibrations while focusing, I feel I can really get it locked in. Good support too - I lost the locking thumbscrew and they sent me another one ASAP, no charge.

#9 Geo.

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Posted 10 May 2014 - 04:38 PM

Bill Vorce (telescopewharhouse.com) Sells a Tasco unit for under $20 that has been adapted to many socpes.

#10 Arctic_Eddie

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Posted 10 May 2014 - 04:48 PM

Is this the one?

http://shop.telescop...47&categoryId=9

#11 rigelsys

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Posted 10 May 2014 - 07:51 PM

here's a link to someone who's motorized a c11, you might ask him too. Seems to have some nice photos posted.

http://www.pbase.com...image/152127891

#12 hopskipson

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Posted 10 May 2014 - 08:57 PM

Bill Vorce (telescopewharhouse.com) Sells a Tasco unit for under $20 that has been adapted to many socpes.


Have you adapted this to a SCT focuser? If so I'd like to see some pictures. Looks interesting and would be a cheap alternative.

#13 herrointment

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Posted 10 May 2014 - 09:31 PM

Here's a nice unit. LINK

#14 iam1ru12

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Posted 14 May 2014 - 07:10 AM

Another vote for the JMI motor focuser. I bought one for my C8 and it eliminate ALL the vibrations. Also when I upgraded to my CPC 1100 I was able to use the same JMI motor focuser with an adapter kit they sell. The fine focus you can get with a motor focuser is quite amazing!

-Mike

#15 BigC

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Posted 14 May 2014 - 10:25 AM

Motor focusing,while it takes a little getting used to,turns a shaky scope into a pleasure to use.

#16 Bob Griffiths

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Posted 15 May 2014 - 08:48 AM

Motor focusing,while it takes a little getting used to,turns a shaky scope into a pleasure to use.


That is the truth..BUT I became so used to it with my 8i that when I switched to a CPC1100 I still use the MF on the CPC...it becomes second nature like ridding a bike your brain no longer has to work to use a MF \

Bob G

#17 oliverschurer

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Posted 15 May 2014 - 08:28 PM

I agree. I had read in advance about the mental adjustment you will need to make when going to a MF. I also read about the possibility of a 'loss of feel' when focusing. I didn't find either of these things to be troublesome at all, and the benefits on my 8se, when observing from a concrete deck at my apartment, are excellent.






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