Abdul Thomas Jnr avatar
Hi guys. I can get away doing up to 2 minutes exposures with my Rasa 8 and Skywatcher EQ6 R Pro mount and my stars are fine. Do I still need to guide,even if I'm doing 10 seconds exposures?
churmey avatar
If your polar alignment is sufficient, and the results are acceptable to you, there is no reason to guide. 

I very often image unguided 120s.
Well written Concise
Abdul Thomas Jnr avatar
Thank you 😊. I was just thinking about walking noise. If that might be an issue if I don't guide
churmey avatar
You can set your sequence to re-center every 5-10 frames or so. This will act as a way of dithering. Just set your center tolerance a litter higher than you do when guiding.
Abdul Thomas Jnr avatar
Okay thank you
Related discussions
Did Seastar Just Got An Upgrade?
Oh my gosh, you guys, I can't believe it! The moment we've all been waiting for is finally here! Seastar officially has a mount mode! 🎉 This is something I think we all felt was overdue, and now it’s a reality! With this new equatorial operat...
Irrelevant - discusses Seastar mount mode, not guiding requirements.
Apr 1, 2025
Possible RASA 8 Mirror Shift Issues on Long Exposures
Hello all RASA users! I recently bought a RASA 8 that had been in use for several years. After the first tests I didn’t notice any problems, but when I moved to 15-minute exposures, the stars turned into streaks. It feels like the guide scope is not ...
Relevant - addresses RASA 8 specific issues affecting exposure capabilities.
Aug 23, 2025