Funny star shapes with RC6

[teoria_del_big_bang]

Tonight was first clear night I have been able to try out my RC6.
Because I was struggling collimating I sent it off to RVO for them to collimate,
When I tried to take some images the collimation was off somewhat, but i am not sure if this is to be expected and final collimation has to be done on stars.

I have made some small adjustments to the secondary and much improved the star shapes but still far from being nice round things.

Without zooming in look reasonable.

But if I zoom in on any star.

 

Any thoughts ?

Steve

 

Edited June 21, 2022 by teoria_del_big_bang

[Clarkey]

Welcome to the RC club and the delights of collimation! I use the DSI method (or at least something close). I normal align the secondary first using a Reego (or you can use a Cheshire) then use this method to get the primary right. It works for mine but if there is a lot of focuser tilt it may not work for you.

 

DSI_Collimation_Procedure_Ver_1.0.pdf