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How to mount small refactor (ED80) on top of CPC??

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#1 shiner

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Posted 27 October 2012 - 04:20 PM

Not sure the best way to do this guys....?
I could get a ADM Vixen bar to mount first onto the CPC OTA. And then put some sort of Vixen saddle onto that bar that will mate with the Vixen bar on the scope rings on the ED80?

How have you guys gone about doing this please?
Steve

#2 junomike

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Posted 27 October 2012 - 04:39 PM

I could get a ADM Vixen bar to mount first onto the CPC OTA. And then put some sort of Vixen saddle onto that bar that will mate with the Vixen bar on the scope rings on the ED80?



That's exactly what I did! Mind you my two scopes aren't aligned 100%, but seeing that the C11 yields approx 1° and my 120ST up to 4.5° I see now Issue for visual.

Mike

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#3 junomike

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Posted 27 October 2012 - 04:42 PM

Another shot without the Piggyback scope

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#4 junomike

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Posted 27 October 2012 - 04:43 PM

pic

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#5 MikeBOKC

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Posted 27 October 2012 - 04:52 PM

My refractor is in rings mounted on a 7 inch Vixen-style dovetail. The dovetail snugs into a Vizen style adaptor which is screwed upside down onto this, which in turn snugs onto the Losmandy-style top rail:

https://www.astronom...een_p17369.aspx

Alignment witn the scope is easily adjusted by tipping the refractor/ring/dovetail assembly while tightening it in place. I can also skide the adaptor forward or backward for balance.

#6 A. Viegas

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Posted 27 October 2012 - 06:44 PM

Hi Steve-

I have a C80ED mounted on my CPC1100 using scopestuff rails and 4.6" rings. Works great. see here: Scopestuff_rings

Good thing about the rings is that they are adjustable using the thumbscrews so its relatively easy to mostly accurately center the refractor to the CPC1100 scope.

Cheers,

Al

#7 antimorris

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Posted 28 October 2012 - 03:39 AM

I use ADM rails and rings to mount my EON 80ED on my CPC800. They work great and I have the two scopes aligned to each other as well.

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#8 shiner

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Posted 28 October 2012 - 01:26 PM

Thanks everyone.
Mike, what screws did you use to attach the saddle to the bar please? They'd have to be countersunk to allow the bar of the ED80 to fit right?
Thanks, Steve

#9 junomike

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Posted 28 October 2012 - 02:04 PM

Steve, I used a coutersunk screw for the reason you state (to allow the Vixen Dovetail to fit properly).

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#10 junomike

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Posted 28 October 2012 - 02:15 PM

The brass screw threaded into the previously drilled and tapped Dovetail. I also used a locknut (plastic insert) on the underside for added security (not shown in pic).
I found the screw and nut at my local Home Depot. Make sure you have the Dovetail and Saddle available as you'll need to check that the screw is long enough to allow for the bolt to be threaded (at least 4 turns), but short enough not to interfere with the OTA. There's about 0.5" between the bottom of my Dovetail and OTA.

Mike

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#11 shiner

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Posted 28 October 2012 - 02:48 PM

Thanks Mike for your help :)
Steve






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