Correct adapter needed for EOS 50D and Vivitar Series 1 600mm lens

[MichaelB4]

Excuse me if this question has been asked before. I was given a Vivitar Series 1 600mm #Catadioptric Telephoto lens, and the adapter that came with it won't work on my Canon#EOS 50D. I was able to remove the old adapter, and now I'm looking for the correct one to use between the lens and camera. Is the Canon T1 adapter the correct one to purchase? I know about the limitations of the lens, but I'm concerned about it.

Thanks to the community.

Mike

[MichaelB4]

Yes, the solid model, and it came with all the filters. I'm interested in photographing birds with it. 

[ebiggs1]

I am sure it will exhibit what's called Newton's rings. Depending on how the cat lens is made will show how objectionable they are.

I have a FD 500mm f8 Canon cat lens that I converted to EF which works very well. However, the Cnona lens is a far better lens than your Vivitar. One possible better use of your lens is to add an eyepiece and use it for a telescope.

Although this poster was not giving helpful info about the mount, he did have one comment I agree with, "That’s an old manual focus lens and it won’t be worth adapting.". But if you keep it down to $10 bucks I guess it will be fun to try.

[MichaelB4]

thank you for the great suggestion about turning it into a telescope. I’ll do some research on eyepieces. Do you have any recommendations? Thank you.

[ebiggs1]

I haven't done astronomy for a long time so I am not even sure what brands are still available you will need to search for a T-mount adapter a diagonal and an eyepiece if you want to use it as a sky telescope.My stuff came from Celestron. 

The concept is so similar to the extremely popular Celestron C90. Search for the Celestron C90 and you will see get the idea.