Will This Explore Scentific Cradle Ring Work With My Celestron 150mm f/8 Refractor?

[Refractordude]

The Yard Canon retails for $700, which I was planning on spending. Luckily I was able to get it used for $250. I want to add some accessories which include a cradle. The Celestron is a f/8. The Explore Scientific scope the rings were made for is a f/6.5. So I am a little worried about the fit onto my Celestron. Thanks to you all.

https://explorescientificusa.com/collec ... -dar-152mm

https://telescopes.net/store/celestron- ... embly.html

[Voyageur]

According to ES, the inside dimension of the rings is 6.1 inches or 154 mm, and the length is 11 inches or 279 mm. A couple of careful moments with your yard cannon and a tape measure should answer your question.

Good luck!

[Refractordude]

According to ES, the inside dimension of the rings is 6.1 inches or 154 mm, and the length is 11 inches or 279 mm. A couple of careful moments with your yard cannon and a tape measure should answer your question.

Good luck!

The width of the scope changes from the front to the end. That is the problem I am having with any kind of measurement. How much more narrow from 6.1 inches can I go before the rings are a risk. Perhaps not by much within eleven inches. If I could get this from Walmart or Amazon I would just order it. Both pay for return shipping.

[notFritzArgelander]

According to ES, the inside dimension of the rings is 6.1 inches or 154 mm, and the length is 11 inches or 279 mm. A couple of careful moments with your yard cannon and a tape measure should answer your question.

Good luck!

The width of the scope changes from the front to the end. That is the problem I am having with any kind of measurement. How much more narrow from 6.1 inches can I go before the rings are a risk. Perhaps not by much within eleven inches. If I could get this from Walmart or Amazon I would just order it. Both pay for return shipping.

Why not try wrapping felt around the end that is too large? The risk of paying for return shipping if it doesn't work is small compared to scope damage from a bad fit.

[Voyageur]

According to ES, the inside dimension of the rings is 6.1 inches or 154 mm, and the length is 11 inches or 279 mm. A couple of careful moments with your yard cannon and a tape measure should answer your question.

Good luck!

The width of the scope changes from the front to the end. That is the problem I am having with any kind of measurement. How much more narrow from 6.1 inches can I go before the rings are a risk. Perhaps not by much within eleven inches. If I could get this from Walmart or Amazon I would just order it. Both pay for return shipping.

Why not try wrapping felt around the end that is too large? The risk of paying for return shipping if it doesn't work is small compared to scope damage from a bad fit.

Oh, I see. I looked at photos and can see that your scope tapers. Felt seems like a good idea unless the diameter is a lot less at the 11-inch distance from the 6.1 inch point. Have you determined that number yet? It looks like a nice product.

[ARock]

A discussion about rings for the C6-R with info and options

https://www.cloudynights.com/topic/2079 ... s-for-c6r/

[Refractordude]

nFA:

Thanks for the felt idea.

[Lady Fraktor]

The tube is the same diameter along its length, the taper is the lens cell so the cradle would not be attaching onto it anyway.
You can make a cheap handle that goes across the top of the rings you currently have if you are looking for a lifting point.

[Bigzmey]

At one point I have tried the ES rings on my Celestron 150mm short tube frac and the rings are too small for the locks to close. I believe your F8 has the same tube diameter as mine F5 because they share the same focuser.

[Refractordude]

The tube is the same diameter along its length, the taper is the lens cell so the cradle would not be attaching onto it anyway.
You can make a cheap handle that goes across the top of the rings you currently have if you are looking for a lifting point.

Thought about this also.

[Refractordude]

Where can I get a handle? Handle is a broad word. I am coming up with hammers, door knobs, egg whisk etc. Thanks all.

[Lady Fraktor]

Some people just bolt another dovetail onto the ring tops and use that as a handle.

[Bigzmey]

Some people just bolt another dovetail onto the ring tops and use that as a handle.

That's what I did for my 150ST: Second dovetail on top wrapped in crafting foam.