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Focuser for LX90


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#1 RickScofield

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Posted 26 January 2015 - 12:20 PM

Is there a focuser for the LX90 other than my fingers and the focus knob?  



#2 Mark Sibole

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Posted 27 January 2015 - 08:40 AM

what are you looking for Rick?something easier or something in an electronic focuser? There are options for it.There was an older style electric focuser that went right on the focus knob and you pressed a button for in focua and out focus or you could add a crayford type focuser to it or electric focuser to it.JMI hads a lot of options If memory serves me right for the lx90.

MOtofocus for the lx90

http://www.jimsmobil...focus.htm#Meade

or the meade zeroshift

http://www.meade.com...ro-focuser.html

I actually have 2 of the meade zeroshift focusers.One for eyepieces and standard stuff and the other i have modified with a plug and rod system mounted to a side plate to remote focus a wide angle camera lens.

Advantages of the meade xero shift is that it can be threaded directly on the visual back of the lx 90 and lx200 series or you can put a 2 inch adapter on it and use it on any refractor that has a 2 inch opening.So its multi purpose.


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#3 RickScofield

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Posted 27 January 2015 - 11:45 AM

Mark,

Thank you !

Meads website says the Zero Shift focuser is not compatable with the LX90. Says it only works with LX200's and LS models.

I just took a look at JMI they have 2 models of the MOTOFOCUS for the LX90, one with a controller and electric brake and one that uses the MEADE AUTOSTAR but w/o an electric brake. 

 

Thank for your time,

 

Rick Scofield          



#4 Mark Sibole

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Posted 27 January 2015 - 06:41 PM

the only incompatable issues i can see is the voltages for the moror may differ.They also stated that it wasnt compatable with the lx200 classic but i used one on my classic for several years.I know in the past the focuser came with a hand paddle controler to adjust focus via the hand control and you didnt have to have it plugged into the scope focuser port.The only difference was on the classic they used different voltages for focus speed.Ill have to do some asking around on some forums of lx90 users if anyone has put one on their scope and if they had any issues.But i cant forsee any issues especially if they still give the hand controler with the focuser..So long as the LX90 has a 2 inch visual back on it it should fit.Let me do some checking and ill get back to you.

 

Mark


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#5 Mark Sibole

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Posted 27 January 2015 - 06:43 PM

here was the old style system with hand paddle.

http://www.bhphotovi...crofocuser.html


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#6 Mark Sibole

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Posted 27 January 2015 - 06:49 PM

http://www.optcorp.c...crofocuser.html

call and see if it has the hand paddle with it if it does it will work for you.

The LX90 never had a focuser port unless you bought the now discontinued 909 adapter which had tfocuser port  luminated redical port and  something else on it that i cant remember off hand.That is why it is now listed as non compatable.But if OPT does have it in stock with the hand controler it will work just fine for yoy.If they dont have it with the hand paddle let me know and ill check to see if one of the JMI hand controlers work on it.You may be able to order 1 of the JMI controlers for it or ill look around in my OBS to see if I have an extra controler i can part with.

Its actually a shame someone at meade decided to discontinue the 909 module.I would love to see them come back into stock as i know several who would love to have one and lord knows they arnt that expensive to produce.

 

Mark


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#7 Mark Sibole

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Posted 27 January 2015 - 06:54 PM

This JMI will work for the micro focuser

http://www.jimsmobil..._hand_units.htm

You should be good to go with the meade micro focuser and the JMI hand controler will work just fine together for you.


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#8 Mark Sibole

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Posted 27 January 2015 - 06:59 PM

Mark,

Thank you !

Meads website says the Zero Shift focuser is not compatable with the LX90. Says it only works with LX200's and LS models.

I just took a look at JMI they have 2 models of the MOTOFOCUS for the LX90, one with a controller and electric brake and one that uses the MEADE AUTOSTAR but w/o an electric brake. 

 

Thank for your time,

 

Rick Scofield          

The electric brake is actually built into their hand paddle. if you plug right into the scope you dont have the electric brake.Thats why I have the hand paddles from JMI for all of my focusers.I believe it applies a small reverse surge of power on the motor to stop it instead of free wheeling on you.


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#9 RickScofield

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Posted 28 January 2015 - 05:42 AM

Mark,

I can't thank you enough for all your research and advise. I think I'm going to give the JMI focuser a try. I called MEADE Support and they said the LX90 would not support the Zero Shift Focuser that it doesn't have its own hand paddle but rather is controlled by the AUTOSTAR II.

Again I can't thank you enough for all you help.

Rick Scofield       



#10 Mark Sibole

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Posted 03 February 2015 - 09:44 AM

OK looks like Meade discontinued the hand paddle for it then to save money.

LIke I said the zero shift will work but youll need to get the hand controler from JMI.I tested it the other day and the JMI hand controler will run the Meade zero shift with no problems and it gives the braking also.Good luck on what ever way you go.

 

Mark


Mark Sibole
MTSO Observatory
Fife Lake, Mi.

http://astronomy.qteaser.com

#11 RickScofield

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Posted 08 February 2015 - 05:00 PM

Mark,
Thanks for checking that. I ordered a MotoFocus from JMI and got the other day. I went to install it and it didn't fit my LX90 it's to short. I called and talked to Tom with JMI and looks like Meade changed the focus knob configuration they use on the new LX90's. It's longer than the,old version so JMI is going to make an extension to make up the extra length. Looks like Meade added a flange off of the ota back end which in turn added 1/2 ". Will see how this works out.
Rick Scofield

#12 RickScofield

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Posted 12 February 2015 - 06:46 PM

To finish out my story from above,I received the extension today and installed the MOTOFOCUS. It seemed to fit like it was supposed to and yes it does focus the telescope. I won't be able to give it a true test until our weather breaks and we get a clear night.
I want to thank Tom Johnston with JMI for working with me to get this unit to fit and for being so responsive.I would recommend these folks highly. Outstanding Customer Service seems to be very un-common these days but seems to be an everyday practice at JMI.

Rick Scofield

#13 MistrBadgr

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Posted 12 February 2015 - 07:11 PM

Thanks, Rick!

That is good information. I have thought about getting something from them for my LS 8.

Bill
Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma

#14 RickScofield

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Posted 13 February 2015 - 06:16 PM

Bill,

I am sure that if you order one it will fit your LS perfect and you won't have to go through the slight delay in using it that I had. Anyway I had a break in the weather tonight and the JMI MOTOFOCUS focuser works great. You can achive very fine focusing using it. Its very easy to operate and without doubt STOPS the vibration of the telescope associated with manually turning the focus knob by hand.

Again I can' thank JMI enough for all their help.I would recommend this product for folks looking for a work around to the ZERO SHIFT to provide an alternative for finite focusing and to help reduce vibration.

Rick Scofield   



#15 MistrBadgr

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Posted 13 February 2015 - 06:41 PM

Thanks, Rick!

That is good information.

Bill
Bill Steen, Sky Hunters' Haven Observatory, Broken Arrow, Oklahoma




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