imakebeer Posted March 12 Share Posted March 12 Since the weather at the moment seems to be terminally cloudy I've finally turned my thoughts to how to attach a guidescope to my SW150PDS - advice from the SGL massive would be much appreciated..... First pic below shows the OTA. Mounting options seem to be either to attach it via the finder shoe circled in red or piggy back on to the tube rings circled in green. Second pic shows the bits I have: Altair guidescope Tube rings and standoff (?) supplied with the guidescope An alternative black finder shoe (?) A green Skywatcher (?) dovetail (?) Also various bolts I can use but they're cheap if I need more So it's a question of whether I can use what I have or if I'm better to get some other bits? 1) Easiest option seems to be to fit the guidescope into its tube ring assembly and attach that to the existing finder shoe (it fits). But it seems like it might be handy to retain the optical finder scope??? 2) I could replace the stock finder shoe with the rather more sturdy-looking black one. I'm somewhat reluctant to do this for fear of dropping the small nuts down the tube or knocking the secondary mirror but I can probably do it. But I still lose the optical finder scope. 3) I'm given to understand that we want the guidescope to be mounted as rigidly as possible so maybe piggy backing is the much preferred option... I'll need to rotate the OTA in its rings to avoid the focuser - not a problem. I think I can fix the spare green dovetail to the OTA tube rings but then what? I'm not sure I can then easily attach the guidescope tube ring assembly to the dovetail. At least, I can probably attach it but I'm not certain how rigid it would be. So am I better off to source some extra bits for piggy backing, and if so, what? Or do I just take the easy option and see how I get on for now. Thanks in advance 👍 Link to comment Share on other sites More sharing options...
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