slr telephoto lens to spotting scope converter?

[socalr6]

I have an older Sigma 600mm fa slr lens. I want to convert it into a spotting scope. I have read they exist buy my seach skills have been put to the test on this one. Tokina makes one according to a 2007 post on photo.net. Can anyone help me find this? Thanks!

[reggie 00]

http://www.cabelas.com/cabelas/en/templates/pod/standard-pod-wrapped.jsp?_DARGS=/cabelas/en/common/catalog/pod-link.jsp_A&_DAV=MainCatcat21404-cat602257-cat602250&rid=&indexId=cat602250&navAction=push&masterpathid=&navCount=35&parentType=index&parentId=cat602250&id=0040040

[socalr6]

Thanks but I want to use a camera lens (600MM Sigma Fixed apeture F8) and attach a spotting scope eyepiece to it to use as a spotting scope. I don't want to take pictures.