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Yeah it's easy to mess your collimation complètent as you did. That's why they recommend changing them one by one to stay close I did change them 1 by 1. |
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| Personally I'm not very fond of these Bob knobs, because you have to intervene a lot more than the original ones. You did a pretty good job on the alignment but the first circle around the secondary mirror is pinching at 8 o'clock (cf 2 o'clock) but I'm not sure that this explains your issue. The images you show with are the whole images or zoomed in parts? Maybe firstly I 'd start by "resetting" your secondary mirror so the the mirror is as parallel as you can to the support. If this doesn't work out I'd say that maybe there's a backfocus issue or a tilt issue. Check out if these deformed stars are the same all over the image or not. For backfocus and tilt issues there are lots of tutorials on the internet |
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Personally I'm not very fond of these Bob knobs, because you have to intervene a lot more than the original ones. You did a pretty good job on the alignment but the first circle around the secondary mirror is pinching at 8 o'clock (cf 2 o'clock) but I'm not sure that this explains your issue. The images you show with are the whole images or zoomed in parts? Maybe firstly I 'd start by "resetting" your secondary mirror so the the mirror is as parallel as you can to the support. If this doesn't work out I'd say that maybe there's a backfocus issue or a tilt issue. Check out if these deformed stars are the same all over the image or not. For backfocus and tilt issues there are lots of tutorials on the internet Already done. Please read edit at top of top post on this thread. Can't test until no clouds. |
