8" GSO RC with CSL Moonlite FocuserTelevue TV60isLosmandy G11 with Gemini 2 (with Ovision upgrade)
SBIG STT-8300m with Self Guiding filter wheel
A wide assortment of lenses for my Canon.
Quote:G11 G2 + TDM is very close to the price of a Mach1... and to those who say a TDM will outperform a Mach1, well maybe it will and maybe it won't. But mine does 0.42" peak to peak after PEM. A PE that low is in the same range as a TDM.
- Jared Willson
Quote:I will absolutely contact Losmandy and OPT if I determine there is something wrong with the mount. At this point I haven't made that determination. With so many variables, it is far more likely that I am missing something. The list of possible culprits is getting smaller, but sending the mount back or having it replaced is not a trivial matter (especially if a replacement will behave the same way). The machining and pointing accuracy of this mount are far superior to anything I have previously owned, so I want it to work and will spend some time to get it working correctly. If the problems remain after I have exhausted the list of things I may be doing wrong, then I will conclude it is faulty and go from there.
Kevin UnderOak Observatory Celestron Hyperstar C8 SCT Celestron Classic (1972) Orange C8 SCT Vixen VC200L Losmandy G-11 Gemini Losmandy GM-8 Televue 76/SolarMax 40 Televue NP101 ST-402ME/Nikon D70 DSLR SBIG DSS-7 Spectrograph SBIG ST8-XME & CFW9 filter wheel Starlight Xpress SXVF-8MC Pyxis LE Camera Field Rotator
Mach1GTO / G11/G2 (stock) / AT6RC / AT10RC / TMB92SS / Astrodon 50D / STT-8300M / FW8G-STT / PixInsight / etc, etc. Astrobin - Flickr
Quote:While I had the worm block disassembled, I decided to inspect the worm itself. I found an area on it where it looks like the threads are actually damaged. You can see it on the attached pictures, though it doesn't show as well in the pictures as it does looking at the worm. I don't know if this is significant enough to affect tracking, and the sides of the threads (the part that contacts the teeth on the RA gear) look fine. But just to be sure, I decided to check out the DEC worm. It was perfect. No visible flaws. I swapped the worms and the gearboxes on the two axes. Still not the end of the story...
Ed Thomas Deep Space Products www.deepspaceproducts.com
AT6RC; C6R; 8" R200SS; 10" SNT; RV6; PST Vixen GP + Starbook-S Warped LXD55 G11 Gemini-1 & DSC Gone! HGM-200 Gemini-2 Orion Starshoot DSCI2; DFK 41AF02 Sky Commander 4 SkyShed POD XL3 14.5" f5 folded Newt Finished. Now in storage. Mount for 14.5" Portable obs on 7ftx16ft utility trailer wi 8ft dome Trailer Plans Approved, Jig Built! http://cleardarksky.com/c/MCAOobMDkey.html
Quote:OK, finally had some clear skies last night to test things out.The short version: I am ready to throw this thing in a lake. My CGEM tracked better than this.After changing the RA worm, gearbox, and bearings, I continue to get trash results with RA tracking. Deviations were on the order of 10-15 arcsecs, and they were quick (unable to guide them out). I tried guide exposures anywhere from 0.5 secs to 4 seconds in an effort to get in front of whatever is causing the problem, but no luck.The deviations appear to be periodic, on the order of every 120 seconds or so which corresponds to half the worm cycle. But this is with a completely different worm than before! I honestly don't know what could even cause such behavior. I am out of ideas, other than return the silly thing. But I don't know what part of it is defective.Any suggestions?Jeremy
Quote: The deviations appear to be periodic, on the order of every 120 seconds or so which corresponds to half the worm cycle. But this is with a completely different worm than before! I honestly don't know what could even cause such behavior. I am out of ideas, other than return the silly thing. But I don't know what part of it is defective.Any suggestions?Jeremy
C14 EdgeHD, C11 EdgeHD Zhumell 8" f/6 Newt AP1200GTO, CGEM DX, CG5-ASGT Rob Miller Tri36M tripod Canon Rebel XS, Atik 314L+, DSI pro I,II, QHY5L-II SX 7 FW with Astrodon LRGB, Ha 5nm Hutech OAG5, Rainbow Optics Grating Scorpio Observatory
-Jarrod- Ahwahnee Hills Observatory 10" AT10rccf OTA Mounted on a Hypertuned Losmandy G11 Camera: Canon T4i http://www.astrobin.com/users/powerstroke01/