OAG connection

Focusers, Filters, Barlows etc..

Moderator: Sam

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Rrosenberg8
Posts: 9
Joined: Sun Sep 09, 2018 10:58 pm

OAG connection

Post by Rrosenberg8 » Mon Sep 10, 2018 10:53 pm

Do I need an adapter for the OAG to an 8" Celestron SCT? The adapters are listed but that doesn't clarify for me.

Thanks

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Support@ZWO
Posts: 845
Joined: Mon Apr 24, 2017 10:08 am

Re: OAG connection

Post by Support@ZWO » Wed Sep 12, 2018 1:04 pm

You need a photography adapter from Celestron, M48 threads.
Location:lon=120.6 lat=31.3
Suzhou China

anofeles
Posts: 8
Joined: Mon Sep 04, 2017 10:58 pm

Re: OAG connection

Post by anofeles » Sun Dec 02, 2018 10:08 pm

Good night...
I bought the OAG some time ago, but I hadn't used it yet. Yesterday I tried it with a cooled ASI 1600MC and my venerable ASI 120mm.
I put the 21mm extender to the 1600, and the 5mm extender to the 120 but I realized that the 120 was not well focused. I estimate I would have needed about 5mm more distance (a 10mm extender).
Am I doing something wrong or are my calculations not accurate?
Thank you for your attention...

jsrj98
Posts: 9
Joined: Fri Nov 16, 2018 5:10 pm

Re: OAG connection

Post by jsrj98 » Tue Dec 04, 2018 12:10 am

Hello,

I recently purchased an OAG and tested it over this past weekend. Have a look at this thread:

viewtopic.php?f=8&t=7953&p=17454&hilit=OAG#p17454

Sam's response is inline with my experience using the OAG with an EFW, 1600 MM Pro and and 120-S. I was able to get the 1600 and 120 focused outside during the daylight. So, so glad I didn't attempt it first at night! You could substitute your gear to make it work.

John

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Support@ZWO
Posts: 845
Joined: Mon Apr 24, 2017 10:08 am

Re: OAG connection

Post by Support@ZWO » Wed Dec 05, 2018 1:59 am

anofeles wrote:
Sun Dec 02, 2018 10:08 pm
Good night...
I bought the OAG some time ago, but I hadn't used it yet. Yesterday I tried it with a cooled ASI 1600MC and my venerable ASI 120mm.
I put the 21mm extender to the 1600, and the 5mm extender to the 120 but I realized that the 120 was not well focused. I estimate I would have needed about 5mm more distance (a 10mm extender).
Am I doing something wrong or are my calculations not accurate?
Thank you for your attention...
take a look of this:
https://astronomy-imaging-camera.com/tu ... -55mm.html
Location:lon=120.6 lat=31.3
Suzhou China

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