Re: 600gto for astrophotography
Bob Luffel <bluffel@...>
Sounds like you have it well in hand already.toggle quoted message Show quoted text
I use a Celestron (vixen) 80mm f/11 and ST4 with my 155EDF.
At f/11 I generally have had no problem finding suitable guidestars within
the field. I like to have a bright enough star so I can keep the ST4 exposures
at or below 1 second. Assuming that your 60mm guidescope is f/11 it should
work just as well, just at a shorter focal length (but with the 130 f/6 you
will have a similar guidescope/mainscope focal length relationship).
Enjoy the manual guiding! I used to be more of a 'purist' and manually
guided, but I got used to auto guiding surprisingly fast :-) (still, the
set up time and hassles are the same for autoguiding and manual guiding).
What the ST4 really bought me is the ability to do something (like observe)
while taking an exposure. That is what my Traveler gets used a lot for (as
a second scope to use while the 155 is humming away).
Oh yeah, one more thing I learned. Stick with simple guidescope rings, they
work well. I once tried a Tak TGM-2 guidescope stage (basically a teegul
mount). It flexed like crazy and was actually a pain to use (lots of shift
in the axis' when adjusting).