Jc ATM 10" F6.1, 1/25th wave spec (max wavefront error +/- 1/12.6 in zone 4 of 6, sodium light ), 6" F7 spec, 127mm F9.4 achro Refractor, Criterion DX8, 10 x 50 bin, SP mount/Synscan goto. ETX80 (finder) Canon 20D, PST DSI 1, Butenschön 125mm F13.4 refractor, diy spectroscope and curiosity
Quote: If it ain't broke...
Uncle Rod Uncle Rod's Astroblog: http://uncle-rods.blogspot.com/
Quote:Charlie, i hear what you are saying, but, since im close to its payload limit now, i will certainly be over it once i add a guide scope and guide camera. want to be certain the gears have all the advantage they can get. perhaps i should just downsize the OTA?
Quote:its not just for PE reduction. with the 10" OTA, finder, and DSLR, the mount is at its payload limit (or at least the advertised limit). i am worried about the overstress on the gears, and the wear of the bearings. but i am also just as scared to screw it up in an overhaul attempt. perhaps i should shell out $450 and send it to Astro Motion???
N11GPS Fastar//TOA-130S//MK66 Std//AT6RC//Vintage C5//Megrez II 80mm APO//SolarMax 40 NJP Temma II//Sirius EQ-G Too Many Astro-Cameras//Mallincam Color Hyper Plus Two not-spoiled Golden Retrievers - Casey and Nelson Lot 19 Deerlick Astronomy Village (Canis Major)
Sometimes I think we're alone in the universe, and sometimes I think we're not. In either case the idea is quite staggering. - Arthur C. Clarke
Home-built Newt: 10" f/4.5 Royce conical primary, Skywatcher NEQ6 (Astrotroniks tuned) iEQ45, Duo-T, 8" f/4 Skywatcher Quattro CF 120 ED f/7.5 Skywatcher Black Diamond 80ED Stellarvue
Quote:"The Only Enemy of Good Enough is More Better."
Quote:how do you know when youve got the "worm engagment/mesh adjustment" right....is it ajust/put back together/track/tear down/adjust....ect?
LS60THa/B1200 Cerevolo 8" F5 MN Orion 11 SCT Tak EM200, Meade 6" F5 Newt, Starblast 4.5", ETX 90 C6 SCT, Meade 90 mm F9 refractor Meade 10"SN Canon T3, Mallincam Extreme
Quote:What drives so many folks to consider overhauling the EQ6 mounts? Is the PE in these mounts frequently too "rough" to guide out?
Quote:a report at the eqmod yahoo group shows a pe reduction from 18.5 arcsecs down to about 8 with bearing replacement. guided, looks like it is at .5 arc secs...wonder what you would get guided before an overhaul?
Quote:What drives so many folks to consider overhauling the EQ6 mounts? Is the PE in these mounts frequently too "rough" to guide out? Some say they work great when guiding but many seem to not be satisfied. Tough to weed through anecdotal evidence vs. real facts.
Quote:Just to put it out there with my experience, I was having eggy star problems at 1800fl on my eq6. I decided to check the ra worm for smoothness, so I pulled the ra motor out and I COULD NOT get the worm spur gear to turn by hand. Period. I backed off the worm meshing and then things got real easy. I set the preload and I am having some good success at 1.8 meters fl.
I don't know how long the ra motor would have lasted with the almost locked worm from the factory.
Maybe prevention is better than cure?
Quote:[I'd say that you did exactly what I'm suggesting - and it worked for you...you had a problem you could quantifyyou had a good theory about what might be causing ityou did only what was necessary to fix it