|
For the ngc 6744 image it doesn't quite look like tilt but slightly worse tracking in one axis. I have a RASA8 where I had tilt and the effect is to have elongated stars in one corner (or side).
I introduced a ZWO tilt adapter 11mm + 10mm spacer + 6.5mm sensor distance and could focus well. I also added a T2 shim which moved the focus about 10% of the focus range.
Now I introduced the ZWO tilt adapter to fix tilt and I found that because it sits on the outside part of the locking collar it fixed the problem (without using its adjustment features) because it sits perfectly square whereas normal (narrow) T2 extensions tend not to sit sufficiently accurately.
I can give more details because I've glossed over things.
|