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Thanks again Members, you are correct as always, it was my alignment.
I started from scratch....realigned scope to Rdf, painstakingly to an 8mm EP on my c925 during daylight. Then 3 star alignment was carefully done using my Baader Hyperion zoom, again down to 8mm. (The seeing would not allow the ES4.7 82). The tight alignment seems to have done the trick. Triffid and lagoon were beautiful and worth the wait. The ring nebula got delivered bang in the centre of the EPs. As was the dumb bell.
I might purchase a reticled EP to take the ambiguity of visual centering of the object out of it.
Thanks again, had the most wonderful night of observing......it was 2am before I even noticed the time!
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