rory Posted May 27, 2012 Share Posted May 27, 2012 i flocked the area around the mirror the other day and its all back togeather and views are fine. but ive a niggle at the back of my mind. when i placed the primary back and placed the three clips back on with two screws on each clip,im sure i did them up reasonably tight. not over the top but secure shall we say. trouble is i cant recall how tight they were when i dismantled it ? should the clips be just touching the mirror , not at all ,or securely ? thanks . Link to comment Share on other sites More sharing options...
BAZ Senior Posted May 27, 2012 Share Posted May 27, 2012 The mirror clips should not be tight at all, if they are even slightly tight, you will get triangle shaped stars and it will not show a good image.I was informed by a regarded scope maker, that the mirror should be free to move, not sloppy, but able to rotate by hand.I got some of the brown baking parchment, which is fifteen thou' thick and tightened the screws down to it, and then slackened them off until I could move the parchment under the clips, without it being trapped. This gives a clearance, without it letting the mirror move back and forward.If you have triangle stars, it's to tight, that was the problem I had after taking the mirror out for a clean.Hope that helps. Link to comment Share on other sites More sharing options...
rory Posted May 27, 2012 Author Share Posted May 27, 2012 thanks baz. my niggle was justified by the look of it then. shall sort it now. Link to comment Share on other sites More sharing options...
sgazer Posted May 28, 2012 Share Posted May 28, 2012 I nearly had heart failure when I tried that on my dob, I tightened the screws only a bit and all my stars looked like triangles, didn't know why at the time. I had to adjust them so they were barely holding the mirror before it was ok. Link to comment Share on other sites More sharing options...
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