Originally posted by Stone G. So, a better solution would be an eqúatorial tracking platform. See for example here:
Astrophotography Part 2 of 6: Equipment Selection - Articles and Tips | PentaxForums.com
Thanks Stone G. I've already read this article, and it claims you can only get a 20 second exposure at best with the Pentax GPS and a 400mm lens. So I'm wondering whether I should invest in one of the equatorial mounts for the longer duration of exposure.
I'm just wondering if that really is it, 20 seconds max with a 400mm.
---------- Post added 06-18-15 at 11:24 AM ----------
Originally posted by Kendigitize I did build a barn door tracker that worked well with my big lenses. Good Luck!
That sounds cool, I'll look into it also.