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Baffles or flocking on the agenda soon?
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It needs some flocking. I like the plastic baffles in the AT8IN, too bad they are missing here.
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I simply removed the "push" knobs on my AT8".
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I did the same to mine, and I added some bigger springs I got from Cost Less Bolts. The difference was amazing. Will do the same again this time.
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I made a stiff metal reinforcing section that helped the stiffness of the tube.
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Can you share a picture how you did it? I'm open to ideas. I also had to do this to my AT8IN and I plan to do it the same way this time : put a big sheet of Aluminium inside the OTA, curve it around, cut a hole for the focuser and secure with lots of stainless steel bolts, and paint black. It worked a treat last time, but this is a bigger tube and it moves a lot more - but only in the direction at right angles to the tube. Length wise it's ok. It's made worse by the grub screws on sides of the base of the focuser - it rocks on those too. But the base is also moving. Added together it moves a lot. The focuser itself is fine - for example the focus lock does not impact the collimation at all.
James