Quote:
Originally Posted by codemonkey
Good point S. I'm reasonably confident it's not a focus/correction issue with my triplet though; the stars look in focus and of a similar size. With my previous doublets you could easily see, using a bahtinov mask, that the focus was off, but I don't get this with the Esprit 120.
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I am confident your triplet will deliver with Astrodon's .
I was just thinking of possible reasons as for why some images acquired with Astrodon's might have some halos too.