Quote:
Originally Posted by citivolus
I just did some tweaking with mine. I found that the three set screws on the SCT end needed to be adjusted to prevent slop, which could explain shift in collimation with rotation. I have not actually tried it out yet to see, but there may be a feathertouch or moonlite in my future.
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The very basic check that I did with mine was;
1) I got the general collimation alignment by putting a laser directly into the visual back & getting it central on the target.
2) Then I fitted the WO focuser & positioned the laser directly into it.
3) I then needed to "re-align" the laser back to the middle of the target.
After I re-aligned I loosened the single Rotating lock screw & rotated the body as it is designed to do, while the laser was still fitted & turned on.
In doing this I was able to watch the laser dot spiral off the side of the target & dissapear.
After a 180deg rotation the laser was hitting the side of the 2ndry tube.
After a 360deg rotation the laser spiralled back onto the target again.
In addition, when I had my 2" diagonal & 2" EP fitted the draw tube would "sag" dramatically under the weight, which also threw everything out of alignment.
As I said in the previous post, I got rid of the WO & bought a FeatherTouch.
What a beautiful piece of engineering.
Fitting my 2" diagonal + a 2" 2x Barlow + a BIG 1kg 2" EP there is not 1 scrap of movement or sag.
Just awesome.
