Making a Meade 2080 LX5 operational, help?
Posted 12 September 2021 - 04:14 PM
Posted 12 September 2021 - 04:38 PM
I got more evidence today that somebody has tinkered to an unknown depth with this scope at one time.
After I got the channel locks on the declination setting circles' mounting knobs I noticed that one side had significantly more "drag" when tightening than the other. Took the knobs completely off today and once side had a small washer between the setting circle and the fork arm while the other side did not.
You're right about the seeing, too. It has been 'poor' seeing the last several nights due to humidity and temperature. I sure had some examples of 'lucky seeing' where things would clear up for a brief second or so, then get worse, then clear up again. The primary mirror still has some greasy haze on it as well. When I originally removed the corrector plate I ran my finger and then a cleaning rag along the baffle to see how much grease was left. I nothing damp, and just a bit of black, dry, grease residue on my finger and the rag. The greasy residue on the primary didn't align with anything in the scope, being about 1/3 and 1/2 way out from the center. I figured that that was dead bug, but who knows?
I've got that grease coming this week. I plan to apply very, very little around the baffle with the mirror fully back and run it forward, then apply a similar amount and run it all the way back again to spread it. After that, another test, then start pulling the whole thing apart to fix the electronics and re-grease all of the mechanicals.
edit - I'm also missing the retaining ring / nut from one of the accessory plugs on the front, so that naked wiring behind the panel likes to *ahem* flop around unsecured. I've a small nut on it now, but it isn't the right thread. I imagine I'll be hitting up some fastener stores around here soon.
Edited by jamestheviewer, 12 September 2021 - 04:55 PM.
Posted 15 September 2021 - 10:11 AM
Grease and gloves, some extra tools, and some other stuff came in. I'll be getting back to work on this soon.
I found and failed to bookmark a message from orion61 on here where he gave his baffle tube lube mix (super lube and mobil 1 synthetic oil) and where he also said that (as I recall, it was for 2080s) the secondary orientation doesn't matter, but the corrector plate orientation does -and- I can't find it again. Google-foo, Bing-foo, nothing I try will find that message again. Anybody got the link that I forgot to save?