ASI071 Pro with OAG + EOS lens?

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Vincent
Posts: 3
Joined: Mon May 20, 2019 3:17 pm

ASI071 Pro with OAG + EOS lens?

Post by Vincent » Tue May 21, 2019 3:48 pm

I would like to use my ASI071 Pro with the ZWO off axis guider and a Canon EOS lens but I am not sure if that is possible and still have the lens come into focus as the EOS T2 I have seems too long when coupled with the OAG. If possible, what combination of parts would I need to achieve focus? Also, I need to put a UV/IR filter in the EOS adapter.

Thanks,

Vincent

Katherine.Tsai
Posts: 317
Joined: Fri Dec 07, 2018 10:24 am

Re: ASI071 Pro with OAG + EOS lens?

Post by Katherine.Tsai » Wed May 22, 2019 9:42 am

Hi Vincent,
It will be too long to add the OAG.

Vincent
Posts: 3
Joined: Mon May 20, 2019 3:17 pm

Re: ASI071 Pro with OAG + EOS lens?

Post by Vincent » Wed May 22, 2019 7:55 pm

What about with the Short EOS adapter that is used with a filter wheel? Or does that only fit onto the FW and not onto the ASI071?

Thanks, Vincent

Chuckwagon
Posts: 20
Joined: Tue Dec 04, 2018 3:52 pm

Re: ASI071 Pro with OAG + EOS lens?

Post by Chuckwagon » Wed May 22, 2019 10:00 pm

Still too long. The EF lens back focus is 44mm. You will need a short T2 to EF adapter, and then calculate an appropriate spacer arrangement with your OAG to meet the 44mm spec.

Vincent
Posts: 3
Joined: Mon May 20, 2019 3:17 pm

Re: ASI071 Pro with OAG + EOS lens?

Post by Vincent » Wed May 22, 2019 11:25 pm

Thanks. I'll keep working on it. Would be really nice to have that AOG on there as its much more elegant that a guide scope. Or get a 5 arc/sec PE mount and not worry about guiding a 200mm lens. :lol:

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Sean.Wang
Posts: 713
Joined: Mon Apr 24, 2017 10:08 am

Re: ASI071 Pro with OAG + EOS lens?

Post by Sean.Wang » Mon Jun 10, 2019 10:27 am

You are welcome, good luck!
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