Quote:
Originally Posted by Amaranthus
Note, if you can't see any guide stars at 500 ms with your ST-i, then something is wrong - you should be seeing lots.
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That does depend on your subject though... for instance I've been trying to capture NGC 55 lately and with 1s exposures and a QHY5L-II I can only see one star in all orientations of my OAG, with a 600mm OTA. I imagine if I was using my RC8 it's quite possible that I'd see none at all.
As for the OP, I agree, it sounds like you're out of focus. Try reaching focus on the moon or failing that, during the day; it'll be a lot easier. You may need more/less spacers between your guide cam and your OAG.