How does my collimation look?

[nitram100]

Never been that good with collimation, cleaned my mirrors a while back and not sure I have aligned everything correctly when putting it all back together.

 

10" F4.8 OO

 

Camera is looking down a collimation cap in the first three photos and the last 2 are looking down a cheshire collimation eyepiece. Sorry if it isn't clear!

 

Thanks for any help

[rl]

Close, but the third clip on the primary is outside the field. Secondary might need a tweak followed by the primary. Take it in very small steps.

[nitram100]

Thanks buddy!

In this pic that I've attached, I've highlighted the secondary. Should it be sticking out like that? Should I be able to see that part of the secondary at all? Because I installed a new 4 vane spider a few years back and wondereing if it is a little off.

 

Thanks again

[rl]

The secondary on a fast newt always looks slightly offset due to foreshortening of the ellipse; the rays hitting the top end of the secondary have had a couple of inches extra travel up the tube to come in closer to the optical axis. . Some people offset the secondary slightly to compensate but OO scopes don't allow for this as the vanes are fixed length, as is true in most commercial designs. 

[Spile]

I wouldn’t make a judgment call without being able to clearly see the outside of the focus tube as it’s the key reference point. I’d also recommend putting a sheet of paper behind the focuser.

[Spile]

Number 1 below…

[nitram100]

On 11/07/2023 at 21:45, Spile said:

Number 1 below…

Thank you so much for this!