Fixed primary collimation

[dave34]

Hi Folks, Having watched a film about collimation caps recently, I thought I'd check the collimation on my starquest 130p I've taken a pic through the cap hoping that you can advise on what you can see, the primary clamps appear to be where they should , hopefully indicating that the secondary mirror is aligned ok, but the rest of the image seems to show the primary needs collimating, how do you collimate a fixed mirror, thanks in advance of any advice given.

[ScouseSpaceCadet]

Don't touch the primary (big rear) mirror. Loosen off slightly the three collimation screws on the front of the secondary (small) mirror and in turn, tighten each of them a touch until the central dot on the primary mirror is in the centre of the ring you can see. It's that easy.

Edited June 22, 2021 by ScouseSpaceCadet

[fozzybear]

you can use this mask overlay on your image to verify "Mir De Collimation"

Collimation03 (2).exe

Edited June 22, 2021 by fozzybear

[fozzybear]

removed as contained second image

 

Edited June 22, 2021 by fozzybear
too small included a second image

[Pixies]

13 minutes ago, fozzybear said:

you can use this mask overlay on your image to verify "Mir De Collimation"

Collimation03 (2).exe 376.5 kB · 0 downloads

I wouldn't worry about that too much. As it's only the secondary that can be adjusted - it's limited to what can be done. Just look to get the dot (eye hole) inside the doughnut marker on the primary.

[fozzybear]

As my Pc is Dual screen forgot to cut the photo of Grandchild Sorry

[dave34]

Will give it a go, Many thanks folks.

[dave34]

It took just moments to align , ive never adjusted a secondary before, everything has come into perfect alignment now. Many Thanks Folks.