Takahashi FS128, TSA 102, FSQ106N, Losmandy GM-8, Baader Mark V, Leica ASPH, Takahashi, Ethos and Panoptic eyepieces.
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
14.5" Starmaster with ServoCat and Argo Navis 1966 Unitron 4" Model 152 EQ Tec 140 TV NP101 f/5.4 APO Telvue .8 Focal Reducer FLI ML8300 and CFW-2-7 filter wheel Astrodon Gen2 RGBL 2" filters Baader 2" Narrow Band Filters Borg 50mm Guide Scope/ATIK Titan Guide Camera AstroPhysics AP900 Losmandy GM-8 Gemini
Quote:Although I'm attaching the pier to a concrete base with threaded 1/2" rods, I'm a little nervous that lofting the base plate on nuts could create an opportunity for vertical resonance (i.e. bounce) across the pier base plate. I know that such vibrations are probably negligible, but I figure as long as I'm building a permanent mount, I might as well try to remove all sources of noise that I can think of.
Best regards, Patrik Iver 60°N, 22°E
Quote:Leveling not strictly necessary on a permanent set up. If you are portable--I use an ATS pier which is portable, then leveling matters. It matters because it helps your subsequent polar alignment, because the altitude setting of the mount on tripod will be very close to the previous set up, minimizing the altitude adjustment.On a G11 that doesn't really matter. The altitude adjustment is so ergonomically comfortable that it is at least as easy as leveling your pier. With an AP mount 900/1200 it matters. It matters because the positioning of the altitude adjustment is very hard on the wrist. I didn't check out the AP 1100 and 1600 to see how wrist-friendly the altitude adjustment is.For a permanent pier I would level as best I could just because it is a sign of good workmanship. But you don't have to worry if you're a quarter or a half a degree off. It might affect, at the martin, where your meridian flip is in relation to the real meridian.Greg N
Quote:I don't think that's what gnowellsct was referring to. He said the elevation adjustment of the polar axis - adjustment for latitude - was non-ergonomic. spelling.
Quote:I am saying that is not true, it is very easy to turn. It sets quickly and that is about all one can ask for isn't it?Blueman