Stargazing Fixing Vertical Flipping in Prismatic Telescopes: A Troubleshooting Guide

[[AFT]]

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!

 

[chroot]

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

 

[[AFT]]

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!

 

[chroot]

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

- Warren