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Hi James, I have a 50mm Lunt with B600 which I use for solar imaging. It is a bit fiddly to use but not that bad. Lunt did advise that the LS50 was more for visual while the LS60 was best for imaging – but much more expensive. My initial problem was Newton Ring type banding with my Altair GPCAM2 130 Mono. This was reduced by using a tilt adapter. But there was still some uneven lighting across the solar disk. Nearly all problems disappeared when I put my large Altair 24M on the small Lunt. It looked ungainly but there were no rings, vignetting or uneven light that couldn’t be controlled. No need for a tilt adapter. I have a new ZWO ASI585MC but haven’t tried it on the Lunt. As you will have found the LS50 helical focuser and etalon adjuster are not fine adjustment controls – mine is on a camera tripod which is a bit wobbly – but practice makes adjustment manageable. I’ve noted with the larger chip on the 24M (it’s one of the models that uses the IMX571) that there seems to be better areas than others to position the solar image. Again trial and error. But I’m delighted with the LS50, the B600 and the images it produces. I’ve used a 5x Powermate too (with the 130) – which looked ridiculous on the scope – but it focused – and produced respectable edge prominence images. Ron