Photo: Qhy9 mono + qhy 5x2" filter wheel and Baader 2" LRGB, Ha, O3 and S2 filters , Meade DSI Pro 2 as guider, TS 9mm off-axis guider Binoculars: Nikon Action 12x50 Telescopes: Skywatcher Evostar 120ED f7.5 APO + TS 2" flattener Mounts: HEQ5 Pro Eyepieces: Nagler 11mm type6, Pentax XW 7mm, Televue 2X barlow 1.25"
Tak AP QSI Canon
Quote:As i understand you use side by side setup with very different scopes as weight is concerned. The deforked cpc 1100 is much heavier than the ED80. In this case it is absolutely normal in my opinion to not be able to balance correctly in declination such setup. At least this is what i see.
Ed Thomas Deep Space Products www.deepspaceproducts.com
Quote:It is actually quite common for the counterwieght shaft to not be completel true with the rotation of the DEC axis. Many mounts have this problem to some extent. In the case of the Atlas, you are correct that it is most likely a function of the clamping mechanism used to hold the collapsable shaft which may push it slightly off center. It can also be that the nut with the clamp is not made completely straight. Neither of these things is too much of a problem. While it does effect the balance of the DEC to some extent, the effect is fairly minor and the amount of off-balance is generally not noticeable when using the mount. There is one possibility for this issue that is more problematic and should be resolved if it exists. That is if the preload on the axis taper bearing is insufficient to hold the axis shaft true. If the counterwieght shaft can actually be wiggled around when it is clamped tightly, then the preload may be the problem. That is addressed by loosening the 3 set screws that are resessed in the axis nut (where the counter wieght clamp is located) and then threading the nut further onto the shaft a small amount. You don't want so much preload that the axis gets stiff, just enough that the wiggle is gone.
Quote:You really sound like you know what you are talking about.
Robert The more I learn, The more there is to learn! Orange Zone Dark Site 3 Mounts 4 Imaging Cameras 3 Guide Cameras OTA's = yes