faulksy

you have to remove the 1mm adjuster otherwise the glatter can hit the glass of the paracorr if it is in position "A"

hi alan. i use sips, but apparently it can hit that too. didn't get the tublug as you can see the laser hit the end of the coma corrector at the uta end. do you use the tublug ?

cheers alan

yes, i use the tublug. it makes adjusting the primary easy as you can see the reflection in the display on the tublug. only downside is that once you get the paracorr + the tublug + glatter laser all in the focuser then it sits out a long way and gravity could pull it down?? if you have a quality focuser then that should be okay.

the other thing I did was to measure how far the focuser travel is out when I am "in focus" with my most used eyepiece. then i use this focuser drawtube postion as the start position for collimation rather than having the focuser racked all the way in. You should try both ways and see which gives best results.

I found that having the focuser in the most used postion and collimation from that point meant that I got better stars.

Alan