Use a good guide cam like a Lodestar or an ASI and there really is no issue. I use a converted 50mm finder and the Lodestar or ASI and have never once failed to find a star in the FOV. Ever. I also mount it in a 6 point ring system and no flex (system is so light weight).
Using a less sensitive cam like an Orion Starshoot, original QHY 5 or an LPGUIDE have their limitations. Frustratingly so. Let alone a converted Web cam.
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