9 replies to this topic

[Nuno Cunha]

Hi,

 

What would be the adapter to connect an OAG-L (ZWO, M48 female) to a non-Edgehd SCT C11 (2")?

 

Something similar to #93633-A, so I can change the orientation of the camera sensor.

 

Thanks for the help

[KNak]

Why not ditch the 2" adapter and use this: https://www.celestro...-9-25-11-and-14

[Nuno Cunha]

Can this be used on a non-EdgeHd?

[KNak]

Yes it's the same 3.27" end. I have it on my C11 XLT non-Edge

[Nuno Cunha]

It seems that with this one I would have trouble getting focus. Using a focal reducer the OAG-L + filter wheel would throw the camera too far back...

Edited by Nuno Cunha, 10 August 2024 - 09:44 PM.

[KNak]

You'll always be able to get focus but might not be optically optimal.  I assuming you have the f6.3 reducer?  I have the Starizona large format reducer so the that T-adapter is perfect for my setup.

 

Another option then is the Blue Fireball large SCT (3.28") to M48 adapter with M48 spacers, or a variable M48 spacer where you can fine tune the backfocus (helical adjustment).  The benefit of this (as opposed to a 2" SCT to M48 adapter) is that the clear aperture of the Celestron SCT adapter you have is only 38mm whereas the Blue Fireball adapter is 44mm.  This can mean less vignetting or better guide stars at edge of FOV for OAG, but this may not be important to you.

[Nuno Cunha]

Yes, an f6.3 focal reducer.

 

My question is, what if I want to rotate the camera? Adapters like the #93633-A allow you to rotate the camera easily, whereas the ones I've seen, the SCT-M48, do not.

[KNak]

Yes you're limited in that respect with that OAG. The Hercules OAG I have can rotate both sides of the OAG. You may have to add a manual rotator then if you can afford the backspace (assuming you want to stay with the ZWO OAG)

[speedster]

Add M48 manual rotator for about $60.  https://agenaastro.c...hread-r-05.html

 

It only uses 13.5mm of back space to probably not an issue with that.

[Nuno Cunha]

Great, something like this.

 

  I think I need it to be before the focal reducer. It should be similar to the reducer, with a female for the telescope side and a male for the other side (for the reducer to attach to).

 

  2"? M54? M48? I don't know the thread size of the C11...

 

ps: found the thread size: 2"-24 TPI, so I need a camera angle rotator with male and female of 2"-24 TPI.

Edited by Nuno Cunha, 20 August 2024 - 12:14 AM.