Hi Art.

I did something similar last July.
Here's a shot of my set up.
I have a Bushnell Spotting Scope - Discoverer Zoom Telescope.
It is 60X and it included a F mount - bonus.
I attached it to my D70.
According to the adapter, it can provide an equivalent 4000mm lens.(!)
My tripod carrier was slung from the tripod and had a ten pound lifting weight in it for stability - I had to.
And, I was able to achieve a good shot or two.
I hope you will keep trying - I will.

Terry.

OnTERRYo

"The Nikon did the work; I just happened to be behind it at the time." TP