Equatorial Mount Modification/Fix
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- เผยแพร่เมื่อ 10 มี.ค. 2017
- Abit of a switch from what I normally do. In this video I talk you though the problems that I have encountered with my equatorial mount. We take a look at the assembly and I show you the issues. We'll then move onto the changes I'm going to make to try and turn this into something solid and usable.
Excellent vid .followed step by step and cleaned re greased my mount ran almost decent after so ty :) to clarify it was sticky like glue beforehand new grease was a dream.
That's a great idea for a series Matt. Great photography for the first go with it too
Cheers mate - matt
Yeah let’s see part two. I just bought one today and have already had problems with the mount. Anyway , good vid. Can’t wait too see how it turned out.
Very rewarding on the right night.
Wish I'd seen this before I bought this. I was wondering why I was having so much trouble until I had someone look at it tonight and he pointed out the same issues. I thought maybe I could fix it so I watched this, but looks like I'd be better off junking it and buying a decent mount.
lol omfg lol. oh shit I got the 114
Btw, I think I got a neat trick for the washers.
Fishing gears have used it for decades for the breaks in fishing wheels.
They uses Carbon washers to give a the wheel a smooth breaking ability.
Which is an absolute must for the line not to break.
You dont need those break nuts, use the main bolt with a wheel to tightening it up
as they do it on fishing wheels.
I've been into Astronomy for yrs. Recently sold my telescope though as it wasn't getting used. For great starter scopes you can't goo wrong with the Skywatcher series.
Just bought one myself, I knew about the grease ..so watched this just to see how to disassemble... but now wondering if you ever completed part 2 ( or more) im useless at engineering but would love to see what you finally did
I'm alittle late on this conversation but you're obviously a hell of an machinist!! I'd just deal with it till I could save for a better on..The eq2 sucks as well..Still dealing with that shit!!!
lol! I got the Celestron 114 EQ. Just tried it w/out the dioptic doubler and can't focus at all.
Thanks for posting a tear down of this mount. The RA axis (with the big cogwheel) is really stiff - to the point where I think its killed the motor attachment before I got a chance to use it. Any tips for loosening it up so the new motor doesn't have to work so hard if I replace it?
Hi Matt what camera are you using for your Astro photography?
11:30 - for the bullshit steel thread + press onto alu as a clamp that's galling the surface --- quick fix:: chuck the alu on a lathe, make a HSS forming tool with a radius equal to a hardened ball bearing, grind a flat on the bb to interface with the screw, then place the BB as an interface between the two (so the steel screw presses the BB, the BB presses into the radius and exerts sufficient clamping force into the radius you needed without structural deformation).
The great thing about that setup is, like you said, the castings are good, and all the parts are easy for modding. I don't know much about the telescope community other than I've seen some people use 9 mohs alumina slurries to lap precision DIY lenses using raw glass stock), but you can hook up cheap-ass steppers (we're talking 10 quid a piece) to the fine adjust. Then microstep and get 1024 increments (~.3 deg resolution )per rotation of the fine adjust. I'm not sure if that's 'good enough' for telescopy, but it's more than good enough for microscopy. (I.e., our step with all the overpriced Omega shit that could micro-step at 2048 attached to a Newport Optics x-y plane could fine-adjust to the point where we hit the diffraction limit of light and had to move to SEM).
Also, if you look at Stefan Gotteswinter's th-cam.com/video/-qHchpQeuho/w-d-xo.html Deckel chinese-rip off, there's a similar construction (full 3 axis adjust for single-lip tool precision grinding). Making an adapter/mount to hold an ER20 collet would basically give you the same functionality and let you do some interesting grinds (i.e., you could easily regrind the helical cutting lips on dull cutters that were side-loaded too hard etc.)
Also Teflon ideal. and Delrin, yes, UHMW polyetheylene ya (tho i've never seen it used). www.hindawi.com/journals/bmri/2014/548968/ (It's about medical applications of hip joint shit but the science is still good, PC is no good unless it's PCU)
Thanks for this - I was just given a new in box 130EQ and was rather - um - distressed by the mount. You say it's bad design, but it's really not - it's bad execution. I have a Monolux 60mm refractor from the early 1960s (superb scope) with a mount of very similar design that is absolutely rock solid and smooth even after 60 years. I did disassemble it and re-lube it but the fittings are very precise and smooth. The one I have been tasked with now has an immense side-to-side wobble (right out of the box) in RA - I assume that comes from the way the worm gear fits into its socket in the DEC axis casting. Is there any easy fix for this? Thanks in advance.
Not really, unless you can sleeve the rebore the centre
Gonna be interesting..........Matt
Should be good - matt
did you end up finishing this mount ??? would be great to see how it ended up and see the mods you did ... i am into astronomy i have a celestron evolution go to alt az mount it came with a 6" SCT scope but i upgraded to a 8" edgeHD sct (schmidt cassegrain telescope) i do a bit of imaging as well i have a ZWO ASI 290 mc colour cam its more for planetary than deep sky objects but works great
you should have a look at deep astronomy channel and the astro imaging channel and Martin Pyott channel for "learn how to" stuff in astronomy he dose supertunes on a couple of mounts as well (skywatcher eq 5 and 6) there is lots of great lectures on all things space on you tube as well if you would like some links leave a comment and ill post them here
cheers
james D
Hey, will there be a part 2?
Yes there will be - I'm a bit snowed under at the moment - but thanks for reminding me
This astronomy forum in the UK has a couple of threads dealing with these types of mounts. Perhaps they would be of help: stargazerslounge.com/topic/331121-the-exquisite-and-venerable-eq-1/ ...and... stargazerslounge.com/topic/319273-meade-large-equatorialeq-2-hyper-tuning/
@@dirtygarageguy c'mon!!! We want the second part!!!!
Still no part 2?? Waiting ..
Still waiting. 🥴
Is this thing chinesium.
I can't believe the amount of metal to metal in that head.
Hey. I think this is what killed Hawking
Throw it out,don't waste your time
Wow thought it was just some easy tips, not a complet redesign.
Sorry but do not have the mashinery.
No second video?
You failed LOL.
Shit happens.