Finally finished my mounting solution for the Meade LX-90
Version 2 of the myFocuser Project
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brownrb
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Hi all.
I finally completed the motor and temp probe mount for my Meade LX-90. The picture is attached. I'm using a Nema 14 motor to turn the focuser, running a 4:1 step down in the belt drive. Works a treat and feels very solid compared to the janky bit of bent metal that I was using before.
Last edit: Colin Dawson 2021-02-10
Hi Colin
Cool looking enclosure. Thank you for post, with your permission can I add the photo into the list on this site for user contributions? is the STL file available anywhere, I am sure lots of users would find that very useful. I do get a lot of emails from people re SCT's.
Cheers
Robert
Hi Robert. Go for it.
I just posted the STL's so they can be linked as well https://www.thingiverse.com/thing:4758388
Awesome. I have included it into the next PDF document for the project, I much appreciate that,
That's funny timing, Colin. I was just recently working on a similar solution for my LX200. Similar approach as well. I based mine on this design from Thingiverse, but I had to rework it a bit to fit the LX200's focuser knob, and adjust it to mount a NEMA14 instead of an EAF.
Here's what I wound up with. Still waiting to test it out. Galaxy season is coming soon!
Last edit: Scott Mitchell 2021-02-13
What I find most interesting to me, is the inventive ways users develop to interface the motor to theri telescopes. I am constantly amazed at this creativity size and it has been pointed out before by others that the "hardest" part of this type of project is mounting the motor. So I am extremely pleased to see you post your solutions - these types of posts help others and help to reaffirm that we ended up with something that was "doable"
Regards
Robert
Do you find you need the gear reduction? The screw that
drives the mirror is 28 threads per inch Really quite
fine I like the mounting bracket. I am thinking of direct
drive for the focuser and dispence with the belt .
Bob Parry
I run the motor in full stepping mode and turn off the coils when the focuser isn’t moving. The belt means that with my NEMA14 motor, I get 80000 steps full travel end to end. The 200 steps of direct drive, become 800 with the belt ratio. Needed maybe not. It works nicely for me and I’m happy with it :)
Colin
Sent from my iPhone
Bob, as crazy as it sounds, I haven't actually gotten to test it out yet. I should have some testing done in the next week or so.