Fixing Vertical Flipping in Prismatic Telescopes: A Troubleshooting Guide

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I have successfully constructed a prismatic telescope with a fairly sharp, erect image. However, I was disappointed to discover that the image was vertically flipped!

That is, in real life, there would be a car on the left and a man on the right.
When looking through the telescope, the image seen shows the car on the right and the man on the left... its flipped! =o

I would greatly appreciate if someone could tell me how to remedy this problem... if it is even possible to remedy it...

And why does this occur??

Many thanks!
 

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Draw a diagram of the visual path of the telescope, then trace a ray from the right side of the objective, and another from the left side of the objective.

- Warren
 
hmm... i read your advice but i don't really understand what you mean... i tried drawing a finder-ray diagram to illustrate the vertical flipping of the image but i did not manage to attain an asnwer as to why the image is vertically flipped. the finder-ray diagram only showed the side of the object... and its actually the face of the object that is flipped vertically...

please help!
 
There are many different kinds of "prismatic telescopes," and I can't help you without a diagram of the one you made.

- Warren