Cheshire Collimation Eyepieces...

[Guest]

So Auntie @FLOhas two different Cheshire collimation eyepieces that I'm interested in for my 8"Dobsonian. 

https://www.firstlightoptics.com/other-collimation-tools/premium-cheshire-collimating-eyepiece.html

https://www.firstlightoptics.com/other-collimation-tools/astro-essentials-cheshire-collimating-eyepiece.html

Has anyone any experience of either eyepieces? 🤔

[paul mc c]

I have the premium one,which is a very well built and solid piece,and excellent fit in my focusers.

[paul acreman]

Plus one.

I have the premium and it is very good.

[Daf1983]

I have the cheaper of the two for 200p dob. It seems fairly well built but I've had 2 issues with it. Firstly, I can't see the 3 primary clips when centering the secondary in the focuser. I presume this is because it's a long cheshire. I've had to make a collimation cap for this part of collimation. Secondly, there is quite a bit of movement with the cheshire in the focuser, this means that the crosshairs don't stay exactly central when you rotate it. 

Please note that this is the only cheshire I've ever used, so I don't know if these are common issues with long cheshire eyepieces and the skywatcher focuser, or a problem with this particular eyepiece.

[Guest]

Just now, Daf1983 said:

 200p dob. 

I'm using the same telescope...😉

[Daf1983]

4 minutes ago, merlin100 said:

I'm using the same telescope...😉

I noticed, it's my first ever telescope, and I'm very happy with it. However, I have read that the focuser is not the best, and that might be causing the issue when rotating the cheshire.🤷‍♂️ If you go for the premium cheshire, I'd be interested to hear if you have the same issues with that

[Guest]

2 minutes ago, Daf1983 said:

I noticed, it's my first ever telescope, and I'm very happy with it. However, I have read that the focuser is not the best, and that might be causing the issue when rotating the cheshire.🤷‍♂️ If you go for the premium cheshire, I'd be interested to hear if you have the same issues with that

At this moment in time, only the Astro Essentials one available, so I'll wait till the Premium one comes back in stock... 

Edited August 16, 2020 by Guest

[Daf1983]

I'd probably do the same if I was buying again. Good luck👍

[johninderby]

365astronomy has a long version at a good price.

https://www.365astronomy.com/365Astronomy-Collimating-Eyepiece-for-Newtonian-Telescopes-Long-Collimator.html

[Guest]

20 minutes ago, johninderby said:

365astronomy has a long version at a good price.

https://www.365astronomy.com/365Astronomy-Collimating-Eyepiece-for-Newtonian-Telescopes-Long-Collimator.html

Thanks, but I'll be going for the premium one from FLO...

[John]

I use a short version of the cheaper one. Mine was free in fact - they used to supply them with Skywatcher dobs.

 

 

[Dark Vader]

I've got the premium FLO one, only used it twice but it seems well made (he says knowledgeably) 😂 and does what it says on the tin 😃 got my 200p to what I believe is spot on with it.

Andy